Where did you get the information from? I cannot find anything about it in the internet. I see that bitshares will upgrade their protocol to release 4.0 at July 30, 2020. But not anything about that bitshares rebranded to bisq.
I would also be surprised if this was the case, because bisq is a stand-alone software and is built completely different than bitshares.
he said bitsquare and not bitshares.
Why did I read bitshares? I cannot even say, it was to late....
The reason why they have rebranding was quite simple. They wanted to register the bitsquare brand. But the words "bit" and "square" were not very unique. So they asked the community for a new name...
https://bisq.network/blog/bitsquare-is-rebranding/
https://bisq.network/blog/bitsquare-becomes-bisq/