DTV will be using the new generation mpeg4 encoders too, just like DISH
DIRECTV will deploy the first of 26 MPEG-4 AVC HD enabled transponders this summer. The system will use TANDBERG’s EN5990 real-time HD encoder for MPEG-4 AVC and its 1+1 HD multiplexing system. 26 MPEG-4 AVC HD enabled transponders times 6 per equals 156 HD channels.
http://broadcastengineering.com/news/directv-ttv-avc-20050221/
Well that certainly is good news.