deemed this a hoax, nothing to see here.
Website GCN apparently captured a photo of an ad on the Xbox 360 dashboard promoting a Red Hot Chili Peppers DLC pack for Rock Band coming Feb. 18. The site also allegedly received an "announcement letter" with the following info.
Red Hot Chili Peppers Pack (440 MS points/ $5.50)
- Under the Bridge (160 MS points/ $2)
- Universally Speaking (160 MS points/ $2)
- Otherside (160 MS Points / $2)
[Thanks to XanthouS]