So what's changed?

A lot!

It's not just what's changed in the world but what's changed in the eyes of your humble (and sexy) reviewer. I've hit level 60, as has many in my guild, and we're actively doing the end game content much more. The game changes a lot from the 1-59 grind to what you do after you hit 60. Plus, my guild is constantly growing, and we're getting to the size now where we can do the end game content without the help of outside raiding organizations. Some of us still continue in them, but myself, I look forward to only doing with raids with my guilds and some of our "close guild friends".