Sine June 7 upgrade, the save button has disappeared from the content type "edit" tab

Hi, Guys--

I just upgraded to the June 7 release, and all of a sudden, the save button has disappeared from the "edit" tab on my content types, whether they use ANT or not, as well as other strange styling behavior on that page.

I also noticed that the -dev release is still from last September. Is that significant?