The only other endpoints are the 818v3 and the 808v6 - both will require firmware updates only.
Not the 861v8+ID41 then? That might be (shocking) news to some people... including me...
Also, regarding your other post, we already know that there's a "white glove" level of encoding / decoding, which is created by revisiting the master tapes, and a backwards-engineering re-encoding level where you can take an already released file & strip the "damage" from it - if you know what equipment was used in the recording chain.