Don't read too much into the fast-track decision. Hollywood is completely shutdown for holidays and ,in all likelihood, this was decided even before the movie opened. At any rate, a 3rd WW was always going to be greenlighted. The biggest question will be whether Jenkins returns and on which terms. WB had a much tighter reins on Jenkins for the first movie and it turned out to be good. They mostly let her do what she wanted to and the reception is more mixed this time so I am not sure if WB will go the same route this time.