Two new heroes have (sort of) been announced! They were mentioned in leaks very recently, and it appears that they were real.
They will be released on September 29th.
A Memory of Lucretia
Lilith have released a video that shows a bit of backstory for them.
Dura called upon Zaphrael to ascend as a Celestial. Zaphrael answered the call but with it, leaving behind his wife Lucretia and their unborn child. Little did he know that his quest for justice would usher a greater evil upon Esperia.