Mesa 10.4 Is Delayed A Few Days As It's Busted On Older GPUs
Emil Velikov explained "it's quite likely that drivers for older hardware are somewhat busted. A quick look at my local piglit runs, shows that the classic [Mesa software rasterizer driver] has a staggering number of regressions ~130 and only ~20 fixes. These stats come from the 10.4 branch [compared to] mesa 10.3.4." Besides swrast, the Intel i915 driver and other old hardware drivers are likely regressed too.
Due to this delay, Mesa 10.4 Release Candidate 4 was tagged today. The final Mesa 10.4 release will come once the fix lands, which will probably be within the week. Mesa 10.4-RC4 has a number of Gallium Nine (D3D9) fixes, Freedreno improvements, and other small tweaks.
The Mesa 10.4-RC4 announcement by Emil can be read on the mailing list. At least when the release does occur, it brings a bunch of new features.
Anyone with old graphics processors still using updated Mesa code is encouraged to try out 10.4-RC4 for narrowing down the problem and ensuring the old drivers are still in shape suitable for release.