An image has been found I suspect for the July Store Calendar. Unfortunately we can’t see the whole flyer–which should be out soon–but the image focusses on Wonder Woman BrickHeadz figurine.
The chances of another series are ever so likely with the first wave having a 1 printed on the tile.
There was a Wonder Woman BrickHeadz produced as a promotional for the San Diego Comic Con along with some other superheroes. Maybe these will also be part of wave two?
Source: Delta Customs