"You may have seen that retailers have taken down the Rock Band 3 keyboard/software bundle pre-orders for PlayStation 3. Unfortunately, this SKU will not be available in the U.S. due to the agreement terms for the region. However, Mad Catz and MTV Games are working with those retailers that accepted pre-orders to enable them, if they choose, to honor those pre-orders placed prior to this change as soft bundles (separate discs and keyboards), at pre-order pricing. These retailers will have more details shortly."
If you're planning on playing the game on the 360 or the Wii, you'll be able to be fully keyboard-bundled. If you're PS3 owner, though, you'll have to purchase the game and the keys separately.
I'm way psyched for the 360 version of Rock Band 3; I love keyboards and harmonies, and both will be represented here. But lately, excitement levels for music games have seemed much less than in the past. Do you guys even care about Rock Band 3?