I would take whatever Brandon or other WP7 dev team managers say or promise with a heavy grain of salt.
Recently, I was in discussions with a couple people at Microsoft to swing one of the free developer phones they were offering on Twitter.
They speak of giving one away like it's no big deal. So I had some back and forth with them on an app, and they said something like "Ok, get a MVP and we'll see about getting you some goodies". I got the MVP done and sent off emails and haven't heard back from them in weeks. Not even a "no".
So yeah, I feel a little bitter about it all. It's not like they owe me anything, but just take whatever Brandon, Ben, and gang say with a great big grain of salt.
I see a lot of talk about supporting developers from Microsoft, but not a lot of action.