It's been a long road but Unity UI is finally here in 4.6, it's something we're really proud of. 4.6 doesn't just include UI, it also has x86 support for Android. You can download it from the usual place. Check release notes here. The beta forum has become the Unity UI forum, so post all your stuff regarding the new system in there. Learn about UI Open Source...yeah, I did say that. And finally, give the UI team a gigantic virtual hug.