YES! I was amazed when that started the other day. HUGE difference. It was actually what made me search the web for other mentions of this the other night and I found this site.
I notice it in the Guide, and when pressing FF/RW - responds almost immediately now. Also, when you delete something, the "Delete Now" text flashes immediately to let you know that you clicked it (rather than having to wait for it to delete first, leaving you guessing if it recognized you hit "Delete").
So much better. I hope they don't mess it up and it continues to work this way. Hopefully more of these changes are coming... it's still slow in a few places but not nearly as bad as it was. I just signed up for HD a month or so ago and was getting ready to throw my DVR out of the window!
HR22/100
SW: 0x2f6, Wed 4/29