Microsoft has officially announced the Xbox 360 Elite model with "a 120GB hard drive, a high-definition multimedia interface (HDMI) port, a high-definition cable, and a premium black finish for the console, wireless controller and Xbox Live headset".
But it doesn't have an HD DVD drive, and there's no mention of IPTV. The price is $479.99.
Tina Woods has posted a video of the Elite at Microsoft's 10 site, and Gizmodo has an interview with Albert Penello, Director of Global Marketing for the Xbox 360. Most of this isn't very interesting, but there's a notable paragraph about Xbox Live. Penello says:
Since we launched the service, there's been a 4x increase in Marketplace activity since Video Marketplace launched. People are spending about 40% of their time using the Xbox 360 for a lot of these entertainment-type experiences like music, movies and TV. So Marketplace has been a tremendous success, and something we're very excited about.