An announcement fresh off the internet is GW's new expansion for Fantasy, being released in July. It's called Storm of Magic, and will apparently make magic "far more powerful". There's also something in there about the tabletop interacting with your armies, and looking at one of the Ard Boyz scenarios too, it looks like they're bringing back Daemonworlds! Who wouldn't be excited? (Daemonworlds were a terribly unbalanced set of scenario rules used years ago in 40k, where the table randomly ate models etc)
The only other info out is these two pics of new plastic monsters, with a whole lot more to be released as well.