Due to the number of changes in WordPress 2.7, it is likely that once it is released, a number of people will quickly upgrade only to find that there theme is now broken or some plugin they rely upon no longer works correctly.
Fortunately, thanks to the availability of WordPress 2.7 beta, many plugin authors have gotten a jump on making their popular plugins compatible (or were able to confirm their plugins work fine with WordPress 2.7), and have been compiling a huge list of WordPress plugins which have been confirmed to be compatible with WordPress 2.7. If you plan to upgrade around release time, you’ll first want to determine which plugins you can’t live without and verify they are all included on this list. If any aren’t on that list that you need, you’ll want to hold off on upgrading.
Note: You can now also confirm compatibility of some WordPress themes as well.
Kyle Eslick
Kyle Eslick is the founder and primary author of WordPress Hacks. You can learn more about him at KyleEslick.com or you can follow his personal tweets here.
14 feature in theme looks quite interesting but yet have problem on SEO with some theme of Wordpress. 
Nicen themes, good work :) 
How to display my wordpress site's tags as cloud in another html site? is there any code? I want to ...
Thanks for releasing this version. 
As your site has a lot of widgets, so I think it will significantly reduce the server usage. 
Yes you are right, WordPress 2.7 coming, and many people need some change, the wp theme blog also. it is really helpful
Actually I was looking for the best place to download all the plugins after upgrading to the new version 2.7.1. Thanx for the post.