Based on the discussion in https://mail.python.org/pipermail/python-committers/2018-September/006127.html it appears that @Mariatta and @barry are requesting another week to finish writing up their governance PEP.
It doesn’t look like the other PEP authors have responded to that thread. I’m unsure how to interpret that.
@guido’s point about right before the perceived deadline being when the bulk of work happens is true regardless. So I agree that moving it without authors asking for it seems unwise.