Unvanquished Alpha 11 as the January 2013 update features a map that has been completely redone from scratch, various map updates, bloom support, refined bot support, GLSL updates, library changes, and new translations.
The bloom support for Unvanquished is implemented with the OpenGL 3.x renderer and was implemented within the Unvanquished game engine for a while but never worked quite right. The bloom handling is now improved and now works correctly with any light source and will yield correct colors. The GLSL (OpenGL Shading Language) updates result in shaders being generated faster than before due to optimizations.
More details on Unvanquished Alpha 11 can be found at Unvanquished.net. The open-source Unvanquished game has a very interesting road-map for 2013.