Well, I was on the money with my prediction.
Now we have a bit of a problem here: Dandon stated that May is gonna have a single batch, and we already know that Boa and Ada are included; thing is, she stated at the end of the poll that Power Girl was also gonna be in may.
Since the new format of the artworks is "2 ladies per batch", I would say that Power Girl is gonna be moved to June, unless Dandon reverts back to the old "3 ladies per batch" formula (highly unlikely, seeing that this month's first artwork has been posted on the last day).