Harmonix are set to reveal their next game today, according to tweet on their official feed.
"Harmonix is announcing a new game tomorrow (it's not RockBand or Dance Central). Stay tuned for the exciting news!", reads the message posted late last night.
Harmonix who have focused on music related games were the original developers of Guitar Hero who then went on to find success with Rock Band and Dance Central. What their next project is remains to be seen.