See this Gamasutra article about JoCo where he will be at PAX doing "Still Alive" and other songs, but will also be on a panel for RBN there.
Plus he says this:
http://www.gamasutra.com/php-bin/new...hp?story=25075How many of your songs are looking like they will be on Rock Band in the near future?
“Still Alive” and “Skull Crusher Mountain” are on Rock Band. Now that they’re doing the Rock Band Network so that indie musicians can get their stuff up there, I’m going to be putting a lot more up.