Erm ... I didn't have any HDMI issues at all prior to this week's update, but whatever they did absolutely toasted something.
Now I have no audio over HDMI, and instead of "HDTV Settings" in the Display settings, I have "Screen Resolution" with a bunch of PC-style resolution options (such as 1920x1080 instead of "1080p). I assume it's seeing my HDTV as a computer monitor now, which may be related to the audio issue.
I'm most furious because of the hour I spent on the phone with the 1-800-4MY-XBOX drone in India, trying to get at some sort of level 2 tech support so I could explain the issue to someone who understands. I install and calibrate home theater systems for a living, yet I found myself arguing with her over the fact that an HDMI cable does not have an HDTV/Analog switch on it (like their component cable does).
In the end, she simply said "I am all there is" in response to me demanding point blank that I speak to someone at level two or in engineering. Incredible.
Anyone else having new issues after the update?