Home Developer Kit was detailed at a GDC session last week and Joystiq has all the juicy details. Finally developers are able to create assets for Home, including trophies, games and environments. This is great news for everyone waiting for the Home open beta; the more content developers create, the sooner a populated and functioning service can be released to the public.
The Joystiq article also includes a good number of photos taken during the session. These show various aspects of Home that we may or may not have seen before. Included is a shot showing a stress test of the new Home Items feature, which allows people to use various objects within the world - in this instance we can see a large number of people dancing around their bubble machines. Speaking of the bubble machine, it was one of the added features in the new Home beta upgrade which goes live this week. Between the improved beta and the almost-fully-functional developer tools, it can't be too long until we finally see Home in the flesh. So to speak.