Here's some awesome feedback I saw on Steam. Can't wait to play this tonight!
"I'm around 10 hours into F1 2011 and to put it short, I love it.
The difference between F1 2010 and 2011 is night and day.
Handling and Physics:
The handling has improved dramatically, no more scripted spin outs, you can actually feel when you're losing the backend and recover from it/catch it. It brings a nice new challenge to the game, it took me a little while to basically relearn how to handle the car but it was a much welcomed change, makes the game 100x better for me.
KERS and DRS:
Both are great additions to the game and feel great, they're integrated as well as their real life counterparts, DRS is usable in practice and qualification anywhere/anytime, I have already had a number of crashes because of early activation of the drs when coming out of corners, in the race you'll have to wait for it to be enabled and be in a 1 second gap of the car in front in order to use it in the activation points. DRS is disabled in heavy rain. KERS will recharge after every lap, usuable in the rain.
AI:
Huge improvement over 2010, they actually feel like they're racing now instead of driving around on their pre-determined paths.
Engineer:
The engineer now gives a lot more feedback over the radio now, information of the person in front, how many laps they estimate before they pit, their tyre choice and other general advice eg: recommended fuel mixes etc. You'll also get information on your team mate, when he's pitting, if he goes out etc. The engineer is also in multiplayer this time around.
Sound:
The sound is great, F1 2010 had impressive sound, sounds even better this time around.
Graphics:
The graphics look great, DX11 is in from release, there's no more "jarate-filter", game benefits a lot from the much more colourful look.
Proving Ground:
This year around as well as time trial you also have time attack which are basically premade challenges (eg: fastest lap at Spa in heavy rain using a mclaren etc) that you can compete in to get either bronze, silver, gold medals depending on your time and also their is a global/friend leaderboard hooked up to it.
Multiplayer:
Also has seen a number of improvements, game supports join in progress now as well as proper spectate mode. You get objectives now like you do in career mode which will give you an xp bonus and your engineer talks to you now as well, he will inform you of who is pitting, their tyre strategy, times/gaps etc.
Those are my initial impressions, I'll update an post if I remember anything I forgot. Feel free to add your own impressions."