New Big update in the future?

Well, if you read Pj's last post, he said PS- Be prepared for a huge update. What could it be? I mean theres the timer thing that says members coming out, and it only has 1 day left, so it that it? Or is it something bigger?
I really think its the members thing, and I know ill preorder it when it is released. A BETA tester told me that he would rate the normal game a 6/10. But the members a 9.5/10, which in reality is a huge difference. Who's with me on this?

i'm on it =p