On my HR24-500 I wouldn't mind getting a non HD GUI update because the aspect ratio is still being affected with each use of a DVR function. Or maybe this update will fix that.. if not I'll probably go back to the national release soon.
One good enhancement I don't believe was possible before this CE was the ability to press stop to cancel a recording while seeing it on the guide. Was always able to do that within the to do list but never seemed to work within the guide.
The aspect ratio may be fixed in the new CE, don't know because I didn't have that trouble.
As for the removing a set to record show from the guide, is that what your talking about ?
If so, if you locate the show you want to remove, hit Select on the show, Episode Options, Cancel Episode.
This works now, but I'm pretty sure it has always worked, not this is for Recordings that are set up in the future, :30 mins, or more.
You can always remove something you have just set by continuing to hit the Record button.
1st time you hit Record, it does that episode, 2nd the Series and third would remove it.