In answer to my own questions.
I don't think there will be major differences with the new publisher, as they have pretty much bought the development lock stock and barrel
I am looking forward to it, as its likely to be the last game released for the PS3/360 before the new consoles. Ideally, I'd love to see the game build on WWE13 and especially the attitude era mode which I think added a lot to the playability of the game. Maybe they could continue the timeline from WWE13, or even switch and do a WCW timeline instead.
In fact, full WCW integration is the thing I'd most like to see, as the creation boards show its possibly the feature people want most.