Two releases on one day, which doesn't happen that much :

3.2.3 is the latest bugfix release for 3.2 featuring some small fixes. A couple of rare crashes were fixed, global shortcuts work again and the plasma applet can now display sizes larger then 4GB properly.

3.3beta1 is the first preview for 3.3, it contains many changes and new features including a redesigned GUI, a new plugin to shutdown your computer when a download is finished, a revamped queue manager, and many more things.

Take a look at the ChangeLog file included in the tar archive, for a full list of changes.