The SDK is not the same as the N900, most apps are missing and the changes listed are most probably not all PR1.2 ones.
Can't check the camera but it's slightly clear that 720p won't be possible with the current hardware.

To clear up the browser back button thing, it brings you one pag back, instead of showing the history part, which can be accessed by the gesture.
I'll check with the requests when I get home.