JAKKS Pacific don't develop games. They make toys. I think they own the license to WWE likeness and THQ has to pay royalties to them or something.
This game is real. It is listed on gamespot under THQ's upcoming titles. This game is being made by Vertigo Korea or so it says on the Gamespot page.
They did make the last WWE game for PC, but if someone else is making it, I'd prefer that.
Edit: What do you make of the 'official trailers' and 'press conferences' on youtube - do you think they're real? The press conference one especially looks like it's filmed in a press conference room - I doubt many youtubers have access to such a screen in order to doctor something up.
Ah, now I see what you mean. At the end of the video, JAKKS Pacific logo can be seen to the right, but in the middle is Vertigo Games. So, do you know what they're like? Good thing if it's definitely not being made by the guys who made WWE Raw PC.