Has anything else been found out about the blackbellys?

I know there were a few people who posted pictures of what they felt to be
a blackbelly. The only thing showing to be the checkered board black markings on
its belly.
Are there any other markings that stand out to say it is a true blackbelly?

Has it been crossed with any other morph then the pastel to make something
else as hot as that Yellow Jacket?

Has there been a super form made yet?

I know it was one of those things that was talked about a bit when NWE posted the yellow jacket then not much else after ......

Over all just wondering whats been going on there with those?