Not that I know of, if you are looking for new interfaces. Creating a new interface for classic Amiga sounds like a perfect job for Sakura IT (https://sakura-it.pl/index.php) 
There's
this one guy on AmiBay, that was recently selling a bunch of brand new interfaces. Even if home made they looked pretty cool. I was going to cooperate with him to produce a "professional" version, but some serious life problems got in my way and the project kind of died (as some of you probably noticed, most of my projects are on hold now). So sorry, but no new MIDI interfaces from Sakura are planned currently.
Anyway I'd ask that dude, maybe he still have a few interfaces stashed somewhere.
