[quote name='johnny konami']Is the Midi adapter included with the bundle? I want to use my own keyboard but this is certainly cheaper than buying the game and adapter separately.[/QUOTE]
Like other people said, the adapter is not included. The keyboard is USB (and, apparently, can be used as a PC midi controller, although I haven't tried it yet). It is pretty solid, though, and the color coding above the keys is a positive for anyone wanting to play non-pro keys or use the keyboard to play the bass parts...or just keep track of where you are on the keyboard playing pro-keys since it can be a bit tricky to read the notes with the game's interface, especially at first. Besides, who wouldn't want a silly keytar midi controller?
The only big negative is that it's only 2 octaves, so you do get those awkward sections where you have to play higher notes but actually have to play them an octave lower.
Btw, you can still find the RB3 midi adapters for all 3 systems on amazon somewhere in the $25-35 range. I've seen the ps3 ones in store at Best Buy, too.