As a result, while nothing is cemented yet, it sounds like the chances of Morgan reprising Thomas Wayne (following his cameo in Batman v Superman: Dawn of Justice) to put on his own Batsuit are slim at this point.
That being said, Jeffrey Dean Morgan’s comment to MTV suggests that rather than throw the Fastest Man Alive into a Flashpoint story, Warner Bros and DC are looking to tell a different story for the hero.
We’ve already seen Ezra Miller’s Barry Allen using his super speed in Batman v Superman: Dawn of Justice, Suicide Squad and Justice League, so a possible flashback to the night that Barry was struck by lightning and gained his powers would be the only way the Flash movie would fall into the “origin story” category.