From hmxhenry on rockband.com:
Available on Xbox 360, Wii and PlayStation®3 system (August 2nd , 2011):
• Beastie Boys – “Make Some Noise”
• Beastie Boys – “No Sleep till Brooklyn”
• Heart – “Barracuda” X
• James Brown– “Super Bad, Pts. 1 & 2” X
• Rufus (ft. Chaka Khan) – “Tell Me Something Good ”
These tracks will be available for purchase as individual tracks on Xbox 360, PlayStation®3 system and Wii. Tracks marked with “X” will include Pro Guitar and Pro Bass expansions for $0.99 per song.
$1.99 USD, £.99 UK, €1.49 EU (160 Microsoft Points) per song
$2.00 USD (200 Wii Points™) per song
$0.99 USD (100 Wii Points/80 Microsoft Points), £0.59 UK, €0.79 EU per song for eligible Pro Guitar/Pro Bass upgrade
"Barracuda!!!" Hell yes! I think I'll have to get the pro upgrade as well. Let's hope there's more Heart to come. I'd love to see "Crazy on You" and "Magic Man" playable.
I found "No Sleep 'till Brooklyn" to be really boring in GH:WT, so I'll probably skip that. I love soul, so I'll check the charts out, but I'm not sure I'll get either the James Brown or Rufus tracks.
edit: ok, so the announcement vid shows the horn solo of Super Bad charted to guitar. I really don't like it when they do that: