Now that feature freeze is past, I wonder if it's time to run pgindent. Last year we did a run immediately after beta1, plus one just before branching off REL_10_STABLE. The value of an early run, IMO, is to get most of the changes in place so that people have a stable base to work from while rebasing patches that didn't make it into v11.
If there are large refactoring or bug-fix patches that haven't landed yet, then it'd be appropriate to wait for those to get in, but I'm not aware of such at the moment. regards, tom lane