When will super sonic galaxy come out

Never.... Although Sonic Team and Nintendo have worked on the same team before, they will never make a Super Sonic Galaxy or Mario and the Black Knight or any other game that has already been made by the other. I will give you that Sega Superstars Tennis bears a very close resemblance to Mario Power Tennis and Sega Superstars Racing (yet to be released) is basically Mario kart with sonic characters and different maps and powerups.