Halo 4 Leaked
Just hours before E3, news has spread about the leak of the Halo 4 announcement. According to Kotaku, Microsoft's site had a non-functioning link that read, "Return to the Halo Universe; Halo 4 is on the way."
A Halo 4 announcement could be the biggest news of E3. As of now, it's the only thing anyone is talking about, and all they have to go on is a broken link that was taken down almost immediately after being posted. Stay tuned for more information.