Basically what it says on the tin.
The (currently) new film, The Batman offers a modern take on the caped crusader, with Robert Pattinson playing a much younger, still learning hero. He has not even upgraded to his "super advanced high tech" level quite yet. Much like the previous Christopher Nolan Dark Knight films, this version of Batman is more purportedly "more grounded in reality":
Prior to this, the last live action film version of Batman was seen in Justice League, played by Ben Affleck. It's essentially the same hero, but a different reality, one in which other heroes exist. Many of these heroes are alien, magical or metahuman, possessing a myriad of enhanced abilities:
Complicating matters is that a previous Batman version, Michael Keaton's from the 1989 film, was also in a world where there were no "metahumans" originally:
This is complicated, because Keaton's Batman has been confirmed in the upcoming The Flash film. The basic premise is that the Flash from Justice League can transverse dimensions, meeting with other versions of heroes from other "universes"... including dimensions where the other DC films are the "canon reality". This is how he meets with an older version of Keaton's Batman... By default, showing that superbeings can/do exist in that world:
In a meta sense, one can understand that these "multiple versions" and the "universe crossing" is a means to tie all the DC properties, past and present together.
However, does that mean metahumans exist in the new The Batman universe, as well?
Has there been any indication such beings exist in "that" Batman's reality, or is it completely separate from the rest of the DCEU?
Has DC given any official word to possible Batman-related metahumans perhaps being included in the series future?