When Jemaine Clement deadpans that Flight of the Conchords, the outrageous music/comedy duo who just missed an Emmy last night, has three tunes coming to Rock Band, I have two reactions: "Oh, B.S.," and "God, I hope so."
The Emmys' red carpet is a weird place to drop a bomb like that, and the interviewer's reaction leads one to believe a publicist didn't plant the question ahead of time. Of course, the interviewer's also completely thrown off by the fact they "broke through security," to do the spot.
I have emailed Harmonix to ask what gives, if this is on the record, and if so, which tunes will be included. If this is true, and take it with a heaping helping of Morton's, "Business Time" and "Leggy Blonde" are lead-pipe locks.
Of course, Tenacious D is in the game, too, so it's not impossible. But one thing they teach in improv comedy is to always agree with what's been said - "Yes, and ..." - so that might be what's going on here.
[Thanks Ryan R. for the tip]