Have you tested WordPress 2.7? Are you satisfied with this version? New Dashboard Interface, More Ajax Tools and Threaded comment enabled. If you are WordPress user and using my Free Themes, I will give you some good news and maybe bad news ;)
The Good News is I had updated some of my Themes Collection and make it compatible with Threaded Comment and its only available in WordPress 2.7. The themes that already updated is :
These themes has ready to download and you can play around with threaded comment. The Bad news is, I am not updated yet all of my themes collection to support this featured. But if you didn’t have a plan to use this featured there will be no problem at all. My themes will be running quite well with WordPress 2.7. If you have some requests to updated my others themes, leave me comment and I will do it for you.
The list of Themes aboves I have change the license into GPL Compatible license. I hope this license could be accepted by WordPress.com ;) Give me a support to do it by sending request to WordPress.com team to add these themes.