Yep, jQuery 1.4 has been released.
Here's a great post from nettuts outlining some key differences and new features.
I don't really have much to add on this, but just a few thoughts:
- Speed improvements are good and all, but when you can get ten times better javascript performance by changing browsers, nearly doubling the speed of your .css() method not the most important thing. Still, I can't expect the jQuery team to be able to retire browsers for people I guess...
- A lot of changes seem to deal with allowing functions to be passed into methods. Being a .Net 3.5 guy, I'm love this anonymous delegate stuff, so it's good to see!