No i think this will be the first lego mynock they were saying. It also would be a better built model with interior. I don't have the first UCS one but I believe it is kinda like my UCS star destroyer in that you basically have a technic frame and structure on the inside and no proper detail or play features. This will be more similar to the recent force awakens Falcon where you can open it up and it has a proper interior with details and features.

Somebody else I know apparently can't say anything at all due to an NDA. when I replied with basically "aha! that proves it exists otherwise you wouldn't need to sign anything" they said "what if the nda covers all ucs in general or another one in particular". very resistant to interrogation lol