I spent over 2 hours trying to upgrade to WP 2.7 RC 2 last night due to bad internet connection.
I made a test drive after that but am not sure if I like the new features. The dashboard looks neater but I have yet to explore all the new features.
I should have waited for a few hours more because WordPress 2.7 Coltrane has just been released. Now, I am upgrading a few more blogs to see if the new WordPress 2.7 works with some of my essential plugins.
Watch out for my update before you upgrade your WordPress 2.7. I will be the guinea pig for you, ok?