http://www.xbox-scene.com/xbox1data/sep/EEZFpZuFVFfajVjLfN.php
The Hypervisor exploit was just the thing hackers needed to push them into homebrew development for the 360. I don't know how well it will go over, though. The 360 is pretty much tied to XBL, so the only way 360 homebrew would work is if they found a way to stay connected to XBL while running it, and finding a user-friendly way to install it.