The HD on low number things isn't really related to the new firmware (they only did that yesterday, while the firmware started appearing a while ago)... all they did is change the virtual mapping from SD to the HD version. Convenient, yes, but really a baby step in the grand scheme of needed features. It doesn't even work with premium HD channels, ie. A&E still maps to SD.

Personally the most useful thing in the new firmware is bookmarks. What I'd really like to see is a widescreen EPG, new episode indication, and better recording management (shows should be able to be stored by show name and then episode name/date, not this massive huge list).