Given the source, think of the rumor designation as more of a formality then anything. Earlier today, Sonic Wrecks uploaded an alternate version of yesterday’s trailer that confirmed a Wii U version of SEGA’s upcoming racer. This confirms speculation that the game was headed to the Wii U, started when Sonic Stadium first reported a Sumo Digital racing title heading to the system back in January.
The trailer has since been removed from Sonic Wreck’s Youtube channel, thus this will be considered a rumor until the game is formally announced for the Wii U this week at E3. If the game is playable, you can expect hands on previews from both SEGAbits and Sonic Stadium when the show opens on Tuesday.