Speaking of, the battery indicator has been improved.
It will better show how long your tablet will stay up by using it the way you've used it "so far".
If you're browsing a lot, you'll see it going down pretty fast and show you that it'll last few hours that way.

Almost as soon as you stop using it (or use it in a less aggressive way), the bar goes up to show you that it'll stay up longer.

I was first confused because I was using the tablet a lot and after a bit of time the bar was already lower than half!
But then I put it on the table (dinner) and when I next started using it again the bar was full again!

I can only love this behavior. OS2007 was almost always showing a full bar and going straight down to 1 level after some heavy usage.

It seems to me that it lasts longer than with OS2007.