Just a few days ago Epic Games ran the first livestream tutorial on UDK on their Twitch.tv channel.
This was a first test run, so it wasn't widely announced, but you can watch the recap of the stream below and leave your comments and suggestions in a special thread on Epic Forums.
Keep an eye on UnrealEngine twitter for announcements for future streams.
P.S. Don't check your headphones/speakers, sound bias issue is with the video
This was their first livestream test video: Level Streaming - some issues with the audio (they had a technical issue)
https://www.youtube.com/watch?v=juKjfw8J0SI