Has Sonic's next Nintendo-only game gone multiplatform?

It looks as if Sonic might have unpinned his colours from the Nintendo mast.
As confirmed last year, Sega had signed up to a three-game deal with Nintendo that included Sonic: Lost World, Mario & Sonic at the Winter Olympics and an as-of-yet unannounced title.
However, VG247 is carrying a still grabbed by Spindashrevealing Sonic’s 2014/15 roadmap. It mentions a “new 2015 title TBA” and lists Wii U, PS4 and Xbox One as the supported formats.
This could be an entirely different game, of course. But if that’s the case, why isn’t the Nintendo-exclusive title on the roadmap?
If true, the new is yet another big blow to Nintendo’s machine which has previously lost exclusivity deals on a number of titles such as Ubisoft’s Rayman Legends, Tecmo Koei’s Ninja Gaiden and Square Enix’s Deus Ex Human Revolution: Director’s Cut.
And while GameStop has subsequently come out and claimed that its removal of listings for the Wii U version of Watch Dogs was a technical error, Ubisoft has repeatedly declined to clarify the SKU’s future when asked by a number of publications.

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