If you want to be technical about the name, yes, I believe WB is calling it the DCEU. Personally, I think Cinematic Universe is more appropos, as it clearly describes a universe shared by programming for initial release at cinemas, whereas an Expanded Universe could easily also encompass television programming.
In case it looked that way, I was not correcting you just for the purpose of correcting you. I just figured knowing the name to google might help anyone outside the loop to get on the same page.