Lik-Sang, purveyor of all things accessory, has spilled the beans about the Xbox 360 HDMI Cable. After Microsoft's HD DVD announcement at E3, people were wondering whether HD DVDs would be capable of playing at full resolution on analog component cables, since there was no HDMI cable available for the 360. Well, that particular question hasn't been solved, but we do know that there is an HDMI cable for the 360.
The cable isn't actually available yet, but you can place yourself on the list to be notified when it is. Note that this is an official Microsoft cable, so it should be widely available by the time the HD DVD drive is released.
Xbox 360 HDMI Cable [Lik-Sang]