Can’t add a class to links in the visual editor since WP 3.1?

Did this feature chang in 3.1?
I recall that I could change the class of the link in the thickbox popup.

The link window was completely redesigned in 3.1 to make it easier to link to other posts in your blog. The “title” and “class” attributes were removed from this window, probably because the UI team thought they were not used as often?