Rumours of Crash Bandicoot's return have been circulating for months now. I'm somewhat convinced we will see the guy over the next week at E3, and stories have been floating around alluding to that.
However, it might not be what you are thinking. There was a rumour on NeoGAF the other day that the character would be returning, but rather than in his own game, it would be in Skylanders Imaginators this year. The rumour has just gotten a big boost. As spotted by NeoGAF again, a tab turned up on the official Skylanders site that had a non-functional tab saying Crash, that was only available on PS4. The tab is no longer active.
None of this means anything concrete, and 'Crash' could just be an edition of the game, but with the previous rumour it looks to be adding up. This of course doesn't rule out a standalone game though, so it may not be all doom and gloom for those of you hoping for that