Yep.No 'Zelda' in the title, easier to see it as a spin off now. Good move.
I know this is anecdotal, but I've already met quite a few people who think that this is the "real" new Zelda for Wii U.
Announcing the next mainline title at E3 with the proper "The Legend of Zelda" tag will set these two apart for the people who aren't that up to date with the latest game news.