Aethra have announced that they will be releasing their HD videoconferencing system in Q1 2007.  They are calling it AVC HD. 

There is little detail so far and no pictures are available yet, but they have said that the system will provide high-resolution pictures, enhanced colours and sharper images, as it should.  They also say that they will be shipping with compatibility for two wideband audio codecs and that the system will be compatible with other manufacturers equipment, a bold statement, but one that should stand them in good stead.  The integrated MCU will support nine sites with multi-protocol transcoding, this is the largest available as a built-in offering and is often the reason that Aethra wins deals.