Harmonix has announced “huge discounts on over 1,100 tracks from the Rock Band Music Store!”
The (way too many to list here) songs, track packs and albums are all “immediately compatible with Rock Band 3 and Rock Band Blitz”.
Rock Band Blitz is the download only arcade game recently released on Xbox 360 and PS3. If you’re already done with the 25 or so tracks the game ships with, the sale looks a good way to get some more Disturbed, Slipknot, Foo Fighters, Nine Inch Nails and many, many, many more. There is no date given as to when the sale ends, so get in now to avoid disappointment.