Timothy Cain, one of the main designers behind the original FalloutFallout, published by Bethesda, Fallout: New Vegas.
His LinkedIn provided the news. Cain is now a senior programmer at Obsidian.
The only question remaining is: will he work on a new Fallout? Or better yet, will Obsidian even develop the next Fallout? This is something only Bethseda, and time, will tell.
Thanks, Rock Paper Shotgun.