Just guessing...

Happy Now
Born to Follow
Bad Name
Whole Lot Of Leavin'

I only say Happy Now because they wouldn't want it to be exactly the same as the last webcast. Or would they....

I think it's cool that they do this though. Last time for Seattle they said 15 minutes, then 3 songs, but it ended up being 5 songs. Hope that happens again. I like the pro videos on their Youtube channel too.