Sony just announced three new ES-series AVRs, all with decoding of the new audio formats (Dolby Digital Plus, Dolby TrueHD, DTS-HD, and DTS-HD Master Audio).
Here's the story:
What is Sony's position on DSP room correction?
Sony has developed their own system that works fairly well, but it not in the same league as the Audyssey system.
Sony is notorious for not wanting to pay license fees to other companies.