TiVo Series2 8.3 update Priority Request and a couple of other things.
A couple of other tidbits to share.
If you're trying the TiVo Desktop 2.4 for Windows Preview Release, there is a feedback forum here.
Also, if you're still using a phone line with your TiVo (you really want to use broadband if you can), it looks like the pool of available numbers shrank on March 1st. You may need to change the dial-in number your TiVo is using if it has had problems connecting.
And don't forget to vote for TiVo. Currently in second place, after the Slingbox Pro.