The voting is open at the Tech Ed site
for you to express your preferences on possible sessions. My experience indicates that submissions not shown here can still end up being sessions, and certainly not all submissions shown here will be accepted, but obviously a strong interest from the public in a session will increase its chances of acceptance. With that in mind I thought I'd show you the results of a few searches.
These have orange plusses on them because I've added them to my preferences. You'll see a grey square you can click to add them to yours.
Next, Windows 7 development. Let's try Code Pack:
And finally the intersection of WPF and Windows 7 searches (I had to crop the shot by hand, there's no handy search that returns just these):
If you want to be sure that Tech Ed USA offers sessions you'd like to attend, the power is in your hands. (Disclaimer: some - but not all - of the submissions I am showing you here are my own.) Make your feelings known. And see you in Atlanta (I hope) in May!