Nexus 7 & Google I/O

I have never owned an android device, but recently I decided to jump ship from iOS and start to budget for a new android tablet. I found the Nexus 7. Everything about it appeals to me; the size, the form factor, the portability, the OS. My question is, that google is very likely releasing the successor to the nexus 7, but I'm wondering what everyone thinks about when its going to released to the public. Some sites say July, some say a week or two after launch. There is tons of speculation. All you android fans know they're releases habits, when do you think it will be available for purchase?

Thanks!

Mattp716