Some of the big changes, (there are tons more):
There is a new default theme in wordpress. It is a little more robust than the old one and allows you to do more.
You can now create custom menus through the Appearances Tab. With a few clicks, you can add a page, a category, an external link, and more. Drop it like a widget and you are done! No more asking coders to do it for you! ( I'm a coder)
Tired of rigging wordpress to do what you want it to do? Now, with a couple of lines of code, you can make your own Vlog, (video blog) Podcasting blog, Photo, chats, and Quotes. This was functional in 2.9, but it has been beefed WAY up in 3.0.
All of these were pretty much expected, but this next one is BIG.
Wordpress and Wordpress MU are MERGING!!
That's right! If you want to start off with a regular blog and then make a network later, or are tired with trying to figure out MU's cumbersome setup and integration, you are all set.
Now all you have to do is install wordpress, do the MU install from the admin panel and you have a full fledged MU just like that!
There are a ton of other things that are coming, but these are some of the main one's addressed right now.
What does everyone think? I know it will bring a whole new spectrum to current blogs on IM, especially the Post types. Imagin being able to do an easy Real Estate Posting Blog in minutes!
Here are some menu examples, etc:
Wordpress 3.0 is due out in May. Get ready...