From HMXhenry on rockband.com:

Available on Xbox 360, Wii andPlayStation®3 system (September 27th, 2011):

• Slipknot – “Wait and Bleed” X
• Slipknot – “Left Behind”
• Slipknot – “Pulse of the Maggots”
• Slipknot – “Snuff” X

(These tracks will be available in Europe on PlayStation®3 system September 28th)

The Slipknot tracks will be available as “Slipknot Pack 01”, and all tracks will be available for purchase individually 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.

Price:

$6.99, £3.49 UK, €5.29 EU (560 Microsoft Points, 700 Wii Points™) for “Slipknot Pack 01”
$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

I know nothing about Slipknot beyond looking like a mild version of Gwar. I like "Before I Forget" as a song, but I don't like playing it in Rock Band because it's hard.

I'd just like to say that dispite having absolutely no interest in Slipknot, I think those song titles are pretty fucking special. Also, someone needs to get on a metal-band song-name generator ASAP.

Not quite what I expected (which is to say I shouldn't expect anything at all) I haven't really listened to a lot of Slipknot, but I at least know Wait and Bleed.

I like a very few of their songs, none of which are in this pack. A big ole' pass on this for me

pulse of the maggots. hardcore as fuck.

27th also happens to be the very same day Mastodon's new album drops. Rock Band gets a Slipknot pack? Are you serious?

:(

Maybe check that out instead?