Apparently, most of these projects are already released, including Project Diana and scribblenauts.
So, although it is still possible, it is not an indication that they are working on a Wonder Woman game.
There was a 4chan rumour saying that they were and it would be revealed at the Games Awards.
However, it seems, Rocksteady and WB Montreal have both said something to the effect that they will not reveal anything at the Games Awards.
Let’s see what happens