There is free Zelda-themed DLC coming out for Sonic: Lost World. It's out tomorrow on the Wii U eShop, and IGN's got one of their exclusive preview things right here. (The gist: Sonic gets to run around a zone filled with Zelda references.)
More importantly, look at that screenshot. LOOK AT IT. Sonic the Hedgehog is in Hyrule, wearing a Link hat and tunic. It's AMAZING. I guess Sega finally got all the fanfiction I've been mailing them.
Bonus Sonic/Triforce GIF: