The PTR is currently down and is being updated to a new build, but in the mean time Blizzard has updated the PTR Patch Notes!
http://www.wowhead.com/?patchnotes=3.3.3-ptr
Included in this new build are several changes to some classes, such as Mangle's debuff duration increased from 12 seconds to 60 seconds. There are also other class changes for Mages, Rogues and Warriors.

Another little gem was added in this build was the ability to your frame rate to an eye blistering 200 frames per second.
Read on after the break for all of the changes!
Blizzard said:

Druids Talents

Feral Combat
Mangle: The debuff from this talent now lasts 60 seconds, up from 12 seconds.
Mages Talents

Fire

Empowered Fire: This talent now also applies to Pyroblast damage.

Torment the Weak: This talent now also applies to Pyroblast damage.
Rogues Talents

Subtlety

Serrated Blades: This talent now allows the rogue to ignore up to 3/6/9% of the target's armor, rather than a fixed amount of armor ignored per level of the rogue.
Warriors Talents

Arms

Trauma: The debuff from this talent now lasts 60 seconds, up from 15 seconds.

Protection

Improved Revenge: This talent can no longer trigger a stun, and instead causes Revenge to strike an additional target for 50/100% of Revenge's damage.
Items

Druids : Glyph of Mangle: This glyph now provides 10% increased damage done by Mangle instead of increasing the duration of the debuff.

Priest Tier-10 4-Piece Healing Set Bonus: Redesigned. This bonus now increases the effectiveness of the caster's Power Word: Shield and Renew spells by 5%.

Technical
Frame Rate: A maximum capacity of 200 frames per second has been added.
am i ok?  

http://www.100fps.com/how_many_frames_can_humans_see.htm
another interesting read
http://www.daniele.ch/school/30vs60/30vs60_3.html

Sorry for being dumb ok? 

I can tell the difference between a 30fps game and a 60fps game. Naturally, 60fps looks way smoother.

The human eye can detect more than 300fps. That is a plain fact. People who has seen the 240fps custom Gran Turismo PS3 demo(using 4 PS3s linked to render 1080p@240fps) claimed that it looked like reality-smooth.

link: http://kotaku.com/5093592/gran-turismo-5-p...2160-resolution

U DUN QUESTION QUAZ...
cause he can™

I'm calling Wiki as not a definitive source for answers as some details does not even has references or proof to back up the claims.

If you noticed the link at the bottom of the Kotaku article, you'd realize that it will redirect you to gran-turismo.com where it details on how the game achieved 240FPS at 1080p. Not interlaced. Here, I'll make it easier for you: http://www.gran-turismo.com/sg/news/sp/d6230p2.html

I agree with your point, but the smoothness of 300fps which is closer to reality is an advantage any rich bloke would indulge in. He might not see all the frames, as how we dont see all movement of a fast moving object but the smoothness(lack of flickering) is worth the justification.

If I have all the money in the world, I would want a 240fps display and a graphic card to run my games at that speed. Wouldn't you?

Well, yes. 60fps with all intended details is considered as the holy grail performance spot.

anyways from my understanding, most games developers would aim for a constant 60fps...

OT: GoW3 is just OMFG AWESOME

http://www.100fps.com/how_many_frames_can_humans_see.htm

/thread

but kratos said he'll be out faster than fermi

anyway... after last nite experience with Sarah Palin, the bayonetta b!tch witch... i was forced to listen over and over again a track named 'ST01 The Falling Military Transport'...

i leave those console games to me brother... well, except for RPG...

its coming out 16 march dude