According to comicbook.com, a new Sonic game will be announced at SXSW amidst many rumors surrounding the gaming event
CB.com managed to interview Ivo Gerscovich who is the chief brand officer for Sonic in America and in the same article they said the following:
And this year is looking to be just as fast for him, with the announcement of a live action/CGI movie coming next year and a new game set to be announced next month during SXSW Gaming.
Although it should be noted Ivo was not directly quoted confirming this. We’ll keep you updated with more information as we get it.
Source: Comicbook.com