Haihao Xiang announced libva 1.2.0 release on Tuesday night with new H.264 encoding APIs for the Baseline, Main, and High profiles. Beyond the new profile support, support for MPEG-2 video encoding was also added (VA-API has already supported MPEG-2 decoding). Other changes in this new VA-API library release include new video processing interfaces with noise-reduction/deinterlacing/sharpening/color-balance filters, new RT formats and fourcc codes, and various other API additions. There's also been VA trace utility improvements and various bug-fixes.
The libva 1.2.0 release occurred on the VA mailing list.
Immediately following the updated library release was libva-intel-driver 1.2.0 to take advantage of the new VA-API abilities.
The updated Intel VA-API driver adds in support for H.264 encoding on Sandy Bridge / Ivy Bridge / Haswell grahics hardware, MPEG-2 encoding on Ivy Bridge and Haswell, and video processing improvements for Ironlake / Sandy Bridge / Ivy Bridge / Haswell. There's also been H.264 encoding optimizations and other changes too.