The Flashpoint movie doesn’t have an official release date or director attached at the moment, but we know that there are some big names in talks to take the helm (Robert Zemeckis among them) and that a Flashpoint script draft has been completed.
The other possibility is that Flashpoint is designed to so disorient the audience that it’s never clear where things are taking place.
“Because of going back and forth, past and future with The Flash, you don’t even know what time period you actually meet Iris.”
While Clemons doesn’t confirm Iris is from another time period, it certainly seems like that’s the case.