Paul Moss knew damn well what he was doing trying to tweet insider information. I refuse to believe he didn't see all of those people tweeting to him abut Adele when he'd say something.
Anyways, reading through UKMix and I think it would be a mistake to wait until next year to release. Her best bet would be to go for Q4/Holiday sales. They would be massive. Plus anything after that is going to hurt interest in the album. She'd be dragging it out a bit too much at that point. She can't expect people to wait around forever so early on in her career.
She could launch at the Grammys next year but her best bet would be to launch at the VMA's, get massive pre-orders and smash it with the first week sales to knock Frozen out of the game in a few weeks time.