Sonic Team Working on a "Completely New Game"

Head of Sonic Team, Takashi Iizuka has confirmed that the developer is working on a "completely new game".
Famitsu (as translated by Soah City) asked Iizuka what the future of Sonic might be, to which he replied:
"We at Sonic Team – are developing a completely new game, as well as developing a full movie, actively done by Sony Pictures, and animation on Sonic Boom. We are also ready to improve sponsor ties. The most important thing is not the fact the series survived for 25 years, but how