It's pure speculation, but we all hope it will be official soon
At one point Yamato wanted to include a VF-22 head with the YF-21 Fast Pack to make the conversion but that idea got dropped. Maybe it was because they didn't hold the M7 license?
From the pics we've seen so far both boosters and all the missiles and fuel tanks are present, so yes, we're getting the full kit + stand
If everything turns out right I'll buy 2 or 3 more Ivanov SV-51's
For the people that like the Toynami sculpt, I really wish Aoshima ups the QC and materials. I'm all for lineart accuracy and there's some places where I really dislike the Toynami sculpt.
So far I'm happy with my Gakkens and like the liberties taken by CM's.