Just upgraded our ircDDBgateway software on the K9IU D-Star repeater gateway from "20130131 release" to "20140203 beta". This brings us up to a year's worth of updates though the "release" tag still lingers a year behind.
I've tested port B (2m) and C (440 / linked system) and they both work.
cc'ing K9IU for their info. I know there are quite a few active members in K9IU nowadays, let me know if you want a d-star presentation/demonstration, I'd be happy to do one sometime (and yeah, we can discuss the pros/cons of using AMBE).
-Corey KB9JHU