Google has posted an hour-long video from Google Developer Day in Moscow. Google Developer Days are events with seminars about Google developer products like Android, App Engine, and Chrome. Over 1,500 showed up in Moscow back in November to take part.
The video features talk about developing extensions for Chrome, among other things. Google also talked about Chrome development, particularly with regards to HTML5 at its DevFest event in Argentina. The company has also posted presentations from that, which developers may find quite useful.
Now that the Chrome Extension gallery is out, there are no doubt going to be a lot of innovations going on with it, particularly with the rise of HTML5.