The new 3.0 Honeycomb version has been previewed by Andy Rubin and showed running on Motorola's prototype tablet (probably a 10-incher). The new version of the Android OS looks quite good for now and there are some interesting differences when compared to the available Android 2.3.
The most noticeable difference is the lack of traditional Android buttons and it is still not clear whether it is unique to the Motorola prototype tablet and thus heavily customized or is it just the way the new Android 3.0 UI will look like. According to the presentation, the new Android OS 3.0 Honeycomb should come "sometime next year".
In addition to the new Android 3.0 Honeycomb, Andy Rubin has also showed Google's latest Google Maps for Mobile 5.0 app.
You can check out more here.