it is available on hasbrotoyshop.com you can order them now, be hurry, it will out of stock soon. It is pre-sell, will be shipped on 9/2/2014. Good luck
If anyone is looking for JUST the pop-out Ark from the Dinobot set, PM me with an offer. I'm thinking about selling it if I can't rearrange my room to fit it in.
Anyone able to order me one and send it onto the UK? Obviously I'd pay all postage and reasonable handling fee!