We made numerous improvements to enemy AI, including:

Various enhancements to enemy netrunner AI.
Improved NPC reactions to grenades and their use of grenades.
Improved NPC reaction time when flanked.
Faster detection by enemies when you're walking or sprinting.
Enemies equipped with Sandevistan cyberware will now activate it to counter a player who uses their own.
Enemies that don't hear a silenced weapon but do notice the bullet impact will now properly investigate the source of the gunshot.
Made improvements for scenarios where a group of NPCs can join another group in combat against you.
Netrunning Changes

Added Perks to expand netrunning capabilities. For example, a new Overclock mode allows you to upload quickhacks by consuming Health if you have insufficient RAM. You can also acquire the ability to queue multiple quickhacks on a single enemy.
Rebalanced RAM costs.
Rebalanced damage and upload time. Changed the effects of some quickhacks.
Removed the option to use Breach Protocol on enemies.
Other

Health Items and grenades now have a limited number of charges that recharge over time after being used.
Stamina is no longer drained outside of combat for actions like sprinting, sliding and jumping. Stamina is drained when firing ranged weapons or attacking with melee weapons. Stamina cost varies by weapon.
Improved the Aim Assist feature.
Rebalanced the base game's main boss fights.
Introduced Armor Penetration for the base game's main bosses.
Removed the one-hit kill protection from civilians.
PERKS & SKILLS
A complete Perk tree overhaul. These trees now contain fewer perks, but impact gameplay in a more meaningful way. Progressing in a given Perk tree will allow you to unlock special abilities such as Overclock mode for netrunners, Bolt shots for Tech weapons, the Adrenaline Rush ability for Body-focused character builds, and so on. Because we introduced extensive changes to the Perk system, your spent Perk points on existing playthroughs have been refunded. You can also choose to reset your Attributes once. Feel free to redistribute these Perk and Attribute points to suit your preferred playstyle before you continue playing.
We merged the previous Skills into five new ones - Headhunter, Netrunner, Shinobi, Solo, Engineer. These are not restricted by their corresponding Attribute's level. On existing playthroughs, your progression on old skills has been transferred to their new counterparts. Skills unlock new passive buffs every 5 levels, and can be leveled up to a max of 60.
Removed the option to reset all Perks at once. Instead, it is now possible to refund each Perk individually for free.
Introduced new kinds of progression shards: Attribute Shards, Carrying Capacity Shards and Cyberware Capacity Shards.
CYBERWARE
Armor is now provided primarily by cyberware. As a result, clothing's purpose is mostly cosmetic. Clothing items no longer have mod slots, and only some items provide bonuses.
The number of cyberware implants your body can handle is now determined by your Cyberware Capacity.
Cyberware implants are now Attuned to specific Attributes - the higher the Attribute, the stronger the stat bonus.
You can now upgrade cyberware on the ripperdoc screen.
Some Cyberware slots can be unlocked by acquiring specific Perks.
Added multiple new kinds of Cyberware.
Visiting ripperdocs is now more immersive. When getting cyberware installed, you sit on an operating chair and experience different animations depending on the type of implant.
Added a side quest introducing the new cyberware system for players who load an older save on the 2.0 update.
WEAPONS
Changed the unique effects of some Iconic weapons to better reflect their distinctive features.
The "first equip" animation can now be triggered at any time.
- PC: Hold B or double tap Alt while the weapon is holstered.

- PlayStation: double tap △ while the weapon is holstered.

- Xbox: double tap Ⓨ while the weapon is holstered.

Added smoke grenades.
Added new melee weapon Finishers.
You can now find a Thermal Katana in the game.
Added new weapon mods and reworked some existing ones. Once installed in a weapon, mods are irreplaceable.
All obsolete weapon mods will be removed from the game. In their place you will find new, random weapon mods in your backpack. The quality of any mods added this way depends on your level.
Removed the silencer slot from Revolvers.
Removed the scope slot from Light Machine Guns.
Implemented a new way to craft weapon mods. To craft a mod, you must first have 2 mods of lower quality.
Expanded the stash wall in V's apartment to display all of the Iconic weapons from the base game.
VEHICLES
Traffic

NPC vehicles can now switch lanes to avoid obstacles.
Pedestrians will now try to avoid running into moving vehicles.
NPC drivers are now better at avoiding you when you are on foot.
Improved braking, acceleration and suspension of cars in traffic.
Some NPCs now might react aggressively when you hijack their vehicle.
Various improvements to traffic density depending on time of day and night, resulting in more realistic traffic behavior.
Driving with a quest-related NPC in your vehicle no longer disables traffic in the occupied lane, resulting in the feeling of a busier city.
Other

Fixers will no longer text you about vehicles up for sale. You now purchase vehicles via the AUTOFIXER netpage on V's computer or by using terminals located in gas stations and repair shops throughout Night City. To find these, enable the new Autofixer filter on the world map. Vehicles are sorted by manufacturer. The vehicles equipped with built-in weaponry have photos marked with a special icon. As you earn more Street Cred, you will unlock more vehicles for purchase.
Added new user settings to help configure vehicle camera and controls. You can now also choose between three different third-person camera distances when driving a vehicle.
Added a new "Driving" category and Driving Manual to the Database.
We implemented various changes and tweaks to vehicle performance and handling:

New speed-sensitive steering applies to most vehicles. The max turn speed and radius adapts to different vehicle speeds better than before.
All engines have torque curves now, which reflect the engine’s character and any power modifiers (e.g., supercharger, turbo, hybrid, etc.). Some adjustments and balancing have been made to vehicle acceleration and top speeds.
Conducted a full pass on adjustments to braking force. For slower vehicles it has been dramatically increased, and all stopping distances were measured and adjusted as necessary.
All vehicles react better to rough terrain and impacts with curbs, meridians, etc. Vehicles feel "heavier" now, as we have improved how we apply gravity as the suspension moves.
Many vehicles were fully retuned or their tuning was heavily revised.
Multiple other small improvements.
BALANCE & ECONOMY
NPCs

All NPCs now scale to your level. Enemy difficulty is no longer dependent on what area of Night City you're in.
Enemies will have different tiers depending on the faction they belong to.
Some NPC archetypes will feature Low, Medium or High armor.
All resistances for regular NPCs have been removed.
Rebalanced game difficulty to increase the challenge at higher difficulties.
Weapons

Weapons now scale damage based on their Tier.
The damage for Smart weapons has been lowered, but they now benefit from dedicated Perks.
Loot

Loot now scales to your level.
Removed excessive findable loot in the game, such as loot that distracts from scenes and quest locations.
NPCs no longer drop clothing.
Crafting & Upgrading

Crafting and upgrading now require only one type of component instead of multiple types.
Replaced old rarity levels (Common, Uncommon, Rare, Epic, Legendary) with Tiers (from Tier 1 to 5++).
Apart from cyberware, now only Iconic weapons can be upgraded. They gain a higher Tier with each upgrade.
Vendors

You can now access the Wardrobe feature through clothing vendors.
Vendor stocks scale with your level, expanding as you reach a new Tier.
Updated vendor stocks so that each has a more distinctive theme and specialization.
Vendors no longer sell quickhack and crafting components.
Adjusted the prices of weapons, cyberware, apartments, clothing and more.
AUDIO
New Radio Stations

89.7 Growl FM features songs created by our community. The DJ, Ash, is voiced by Sasha Grey.
Impulse 99.9 features a completely new set of songs remixed by Idris Elba.
107.5 Dark Star is a new station for electronic music.
UI
The Quest Journal now has a new, cleaner look. Jobs are located in separate tabs, depending on type. The distance to each quest marker is now displayed in the Journal.
Added the option to untrack a quest in the Journal.
Overhauled the phone UI to be more intuitive.
Revamped Perk and Cyberware menus.
Simplified item tooltips. The most important stats are now represented by bars to make comparison easier.
The minimap will now zoom out dynamically depending on your speed.
Updated the minimap to better serve the situation around you. Vision cones will not be visible unless a given NPC reacts to your actions or engages in combat.
Improved D-pad navigation in menus.
You can now change the HUD safe zone. This option is available in Settings → Interface.
Multiple UI fixes for widescreens.
You can now preview clothing and weapons not only at vendors, but also in your inventory.
The indicators that show the status of active cyberware are now displayed on your HUD.
QUEST FIXES
Beat on the Brat: The Glen - Fixed an issue where it wasn't possible to draw fists when the fight started.
Blistering Love - Fixed an issue where the parked car despawned after talking to Rogue in front of the Afterlife.
Cyberpsycho Sighting: Bloody Ritual - Fixed an issue where Zaria's body could get stuck underground after defeating her.
Forward to Death - The forces defending the gate of the construction site now properly attack V.
Gig: Serious Side Effects - Fixed an issue where it wasn't possible to deposit the beta acid at the Drop Point.
I Fought The Law - Fixed an issue where it was possible to get stuck in the Red Queen's Race after completing the quest.
Queen of the Highway - Fixed an issue where it wasn't possible to complete the "Talk to Panam." objective on older saves.
Spellbound - It's now possible to steal the data from R3n0's computer if you don't have a cyberdeck.
We Gotta Live Together - Fixed an issue where an invisible wall made it impossible to return to the camp on the Basilisk.
STABILITY AND PERFORMANCE
Multiple fixes and improvements related to stability and optimization.
MISCELLANEOUS
Added Trauma Drama, an arcade mini game that offers a chance to win special rewards.
Added more secrets to be discovered in Night City.
Added some small scenes to the game, including some conversations with Johnny Silverhand when visiting V's apartment in Megabuilding H10.
You can now change tattoos at ripperdocs.
You can now choose between three Control Schemes for controllers: Classic, Dynamic and Alternative.
Apartments will now give smaller buffs.
Updated the Characters tab in the Database to include more side characters.
Added new niches to the Columbarium.
Added Ukrainian text localization.
PC-SPECIFIC
Updated PC system requirements. A SSD is now required to run the game. More information can be found here.
Added support for NVIDIA DLSS 3.5, which introduces DLSS Ray Reconstruction, a feature that improves the quality of Ray Traced effects. A GeForce RTX graphics card is required. The option is available in Settings → Graphics in the NVIDIA DLSS section. DLSS 3.5 is only available if Path Tracing is turned on. To make sure DLSS Ray Reconstruction works correctly on your PC, update your NVIDIA Game Ready Driver to version 537.42 at minimum.
[AMD SMT] Introduced a new AMD Simultaneous Multithreading (SMT) switch located in Settings → Gameplay → Performance. It allows you to set SMT to Off (only physical cores), On (all logical cores) or Auto (ensuring the performance average across different locations and situations in game is optimal). This change was implemented in cooperation with AMD and is based on tests conducted on both sides.
The Crowd Density setting has been moved from the Gameplay tab to the Graphics tab. Additionally, Crowd Density is now tied to Graphics Quick Presets and will change depending on the selected preset, but it can be customized independently if needed.
As PC system requirements have been updated, running the game on an SSD is now a requirement on Steam Deck.
Updated Steam Deck graphics profile for improved frame rate stability.
CONSOLE-SPECIFIC
Changed the target upscaling resolution on Xbox Series X and PlayStation 5 in Performance Mode from dynamic 4k to dynamic 1800p for improved performance and image quality.