With the new reports of changes behind-the-scenes at Warner Bros. and DC, coupled with what director Matt Reeves has said about starting from scratch, it could very well mean that The Batman will exist outside of the current DCEU timeline.
Matt Reeves’ The Batman is looking like it will very much be its own thing and stay out of the current DCEU timeline.
Batman on Film reports that The Batman will exist outside of the current timeline of the DCEU.
You can read the original report about The Batman taking place outside of the DCEU courtesy of Batman on Film.