There isn't tons to go on or report, but the central news here could be massive.
Yes, it looks like the rhythm band genre could be on the way back in. Bloomberg have reported that a new generation of Rock Band could be on the way. According to "a person familiar with the plan", a PlayStation 4 and Xbox One version of the game is incoming from developer Harmonix.
There isn't much more to go on it than that. Lets remember this is a rumour for now before we get our leopard skin jumpsuits out again.
The question could now become, is there enough demand to buy a new-gen Rock Band again with all the instruments again? Everyone misses those games, not everyone misses spending $100s each year on new fangled instruments and finding a place for all the paraphernalia.