Google’s Hong Kong accidently released a video, this video showing a device in the demo was running on a Android 2.3 (Gingerbread). It shows some of the incoming aesthetic changes.
The video shows a Google Voice walk through on a cellphone with Gingerbread installed. It doesn't show more changes in built-in apps, but it unveils small changes on the system-wide user interface elements. It happens fast (and it’s in Cantonese), but there are two key user interface (UI) differences to watch for. First, the top status bar is now cleaner and in a much less glaring black. It’s a minor tweak, but it definitely represents the honing of the platform.
The launcher now seems to feature icons instead of the buttons found in Android 2.2 (froyo). If this is indeed the case, users will likely be able to swap them with any other icon, so phone and browser won’t necessarily need to be ever present in the launcher. Here is the video: