Hello everyone,
A few things this announcement makes me realize:
Making Wonder Woman DC's official first superhero is quite a bold move for DC--given the institutional misogyny of the industry at large and at DC in particular. I imagine that this is a decision that came from above Dan DiDio's head, and that the higher-ups are more aware of Wonder Woman's mainstream popularity than most of the managers at DC are. Diana had a blockbuster movie that broke down barriers and you can barely tell that's the case at DC proper. This is clearly a move made to bring synergy between the comic book Wonder Woman and the film Wonder Woman in an effort to increase profitability.
All of Wonder Woman's history can now be a part of the main canon. She's a founding member, and maybe even the catalyst for the founding, of the Justice Society. Paula Von Gunther, Red Panzer, etc. can now be part of her established history. It's possible that most of her Golden Age stories actually happened.
It is now established canon that Diana is immortal. Since now she's been active since World War II, we can also expect that she serves as the elder stateswoman among heroes, is a warrior whose skills are unmatched, and has untouchable wisdom in matters of history and human behavior--given how long she has now been operating in the world as a full-fledged superhero.
This is an easy way to fix Donna Troy's origin once and for all. We can return to the "Wonder Woman saves a child from a burning building" origin and re-establish "Who Is Donna Troy?" from The New Teen Titans #38 as Donna's definitive origin. That is, if Greg Rucka's "no return" edict is either abolished or modified.
This will, of course, possibly negate some things or require that some things be clarified: For example, Steve Trevor: If Diana saves him after he crash lands on Themyscira in the 1940s, it will mean that. outside of some magic trick or something, he's dead in the present.
In the end, I think the good outweighs the bad and it will be interesting to discover the details of her new canon as creators unravel them.
"He said that Wonder Woman will be the first superhero whose arrival in America touches off the launch of the JSA. Superman was the first hero of the second generation of heroes, and then there are other eras beginning after the events of Crisis on Infinite Earths."
https://comicbook.com/dc/2019/10/04/...erse-timeline/