I had a Firefox tab parked on the TypeStyler site late last night (actually, about 3:00 am EDT). I refreshed every couple minutes and witnessed things going live almost as soon as they were added to the site.

Grabbed a demo copy as soon as I saw the "Download Now" button became available. (Side note: Kee-Ripes-A'Mighty, those buttons are fugly!)

It works, and there are some nice new goodies, but there are some odd behaviors and some VERY obvious things missing in comparison to v 3.7.2 (which was released in August of 1998!)

Currently trying to write out my initial impressions in review form and take/edit screenshots. Also, I'm trying to get an answer from the developers about the best way to provide feedback and otherwise engage them in a dialogue about any issues with this new version.
"We writhe with the best of them."