At least according to Long Zheng, Windows 7 will be featured at the D6 conference next week.

This wouldn't be too surprising since they have used the D conference to announce previous things like the Surface computer. Bill Gates and Steve Ballmer are both confirmed to be speaking at the event.

Time will tell, either way PDC later this year is when we'll have the real details, and hopefully we'll be able to get a build of it too.