Codenamed “Yukon,” the refreshed operating system for iPhones and iPads includes tweaks and new features across several apps, including features originally planned for last year. The company is also already working on iOS 14, codenamed “Azul,” for 2020. That release is expected to support 5G wireless network speeds and new AR functionality for next year’s iPhone.

The software, for the second year in a row, will speed up the devices and reduce bugs. There will be user interface tweaks, including a new animation when launching multitasking and closing apps. The widgets that appear to the left of the home screen will also have a cleaner look.

A Dark Mode, a black and grey-heavy interface optimized for viewing at night, that can be enabled in Control Center, the panel for quickly accessing settings.

The company is testing a new keyboard option that allows users to swipe across letters on the keyboard in one motion to type out words (Apple could choose to keep this feature internal). This is similar to options on Android handsets and it would compete with third-party iPhone apps such SwiftKey.

A revamped Health app with a new homepage that better outlines your daily activity from the day. There will be a section for “hearing health,” like how loud you play music on your headphones or the loudness of the external environment. It also includes more comprehensive menstrual cycle tracking, vying with period-tracking apps such as Clue, Flo and Ovia.

A new feature similar to popular third-party apps Duet Display and Luna Display that will let users use their iPad as a second Mac screen with the ability to draw with an Apple Pencil, expand the viewing area, and get Mac notifications.

An updated Reminders app that better competes with the several to-do list programs available on the App Store. The new app has a main screen with four default sections laid out in a grid: tasks to be done today, all tasks, scheduled tasks, and flagged tasks. Each section has its own different-colored page that users can add items to.

A new feature in Screen Time, Apple’s tool for controlling device usage, will let parents limit who their kids can and cannot contact at certain times. For example, a parent could make it so their kid can’t contact anyone but them during the evenings. Apple was criticized recently for removing multiple third-party parental-control apps from the App Store, but the company said it yanked the software due to security and privacy concerns.

A refreshed Apple Books app will encourage users to read more by way of an updated progress tracker and a new rewards system.

iMessage gets an upgrade with a WhatsApp-like enhancement that lets people set a profile picture and display name, and choose who sees it. There’s also a dedicated menu in the conversation view to send sticker versions of Animojis, the virtual characters that users can control with the latest iPhone and iPad cameras, and Memojis, which are virtual representations of users themselves.

An updated Maps app will make it easier to set frequent locations, like home or work addresses, and then navigate there. Users will also be able to create groups of frequent places and add a photo to them. The current interface for navigating to suggested or past destinations can sometimes be confusing. This will increase competition with Google Maps and Waze apps.

Apple is combining the Find my Friends and Find my iPhone services into a new, single app, internally called “GreenTorch.” This could go along with a physical beacon to attach to non-Apple devices like a backpack, according to 9to5Mac. That would challenge Tile, which makes similar iPhone-tracking dongles.

The built-in Mail app will be updated with the ability to mute individual threads, block incoming email from certain contacts, and will have simpler folder management.

A new system-wide Sleep Mode that will tie into an upgraded version of the Bedtime tab in Apple’s Clock app. The Bedtime feature lets users input the time they fall asleep and when they want to wake up. The software currently tracks some sleep patterns, but the new version will be more extensive and could integrate with future Apple sleep-tracking devices, like a new Apple Watch. The Sleep Mode, when enabled in Control Center, turns on Do Not Disturb, darkens the Lock Screen, and mutes all notifications.

An upgraded Home app as part of the company’s smart home push will be more integrated with security cameras and have the ability to view past recordings.

Apple is also planning to let the HomePod speaker respond to different users’ voices, creating a much requested multi-user mode.

A more organized “share sheet” interface for sharing photos and web links. The software will suggest people to send content to based on how frequently you interact with them.

The company is testing a downloads manager for its Safari web browser so users can access downloads in a single place like they can on a computer. An updated Files app will work better with third-party software.

The iPad is getting some unique features, including an updated interface for multi-tasking, tweaks to the home screen, and the ability to cycle through different versions of the same app.

Apple is planning to better integrate hearing aid support and will have a more comprehensive Accessibility settings menu on the main page of the Settings app.