http://beautifulpixels.blogspot.com/2010/11/gamebryo-emergent-ip-and-assets-at.html
In other words: bye bye Gamebryo.
Of course, this does not mean that any next title in the Fallout series produced by Bethesda/Obsidian will not use Gamebryo. They already have an investment in this engine's technology, the developers know the codebase and moving to another engine could cost quite a bit to switch, not only in developer uptake, but also licenses.
On the other hand, a new engine is actively maintained and regular code drops are available. Not to mention, fully updated for current day tech.
All in all, it's interesting times...