Carl Worth of Intel released Mesa 10.2.6 as the latest bug-fix update. Mesa 10.2.6 has at least 28 bugs fixed, including many affecting core Mesa, some AMD RadeonSI fixes (affecting Hawall and Tahiti hardware), and various other fixes. Anuj Phogat contributed the most fixes at 15 followed by Marek Olšák at 4.
The Mesa 10.2.6 release announcement can be read on Mesa-dev. Meanwhile, all of the really interesting Mesa development is centered around version 10.3 where there's performance improvements, a new driver, much greater OpenGL 4.x support, and a variety of other additions.