Libopus 1.2 is now in alpha, the library for the Opus royalty-free audio codec that's designed for interactive speed and music on the web while being derived from Skype SILC and Xiph CELT technologies.

With the Opus 1.2 Alpha release there is speed quality improvements, improved VBR encoding for hybrid mode, more aggressive use of wider speed bandwidth, and music quality improvements. Other work in libopus 1.2 alpha includes generic and SSE CELT optimizations, support for directly encoding packets up to 120 ms, DTX support for CELT, SILK CBR improvements. Like most software projects, there is also a lot of bug fixes, including some overflow fixes.

More details on Opus 1.2 Alpha via Opus-Codec.org.