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Sonic Dash has been announced for iOS as an endless runner, likely in the vein of Canabalt. Not much is known about the title, but there is mention of a "frenzied 3D dash through ... Seaside Hill." In this case, I'm going to assume (and hope) that the "3D" is more of a reference to the art style rather than gameplay.
Only iOS has been mentioned, but if Sonic Jump is any indication, it should eventually come to Android devices as well. I hope it's as simple as Canabalt, since I still hold that up as one of the shining achievements of mobile games, alongside the less simple but still amazing Polara.