Hello,
discussed last week during IRC development meeting, we are approaching the time for getting out a new major release - to be numbered v4.1.x.
I would proposed October 7 as the last day do accept new features for v4.1.0. That gives another three weeks to push new code. As a reminder, those that have personal branches with new feature, should merge asap, too.
If the date is a constraint for some immediate plans, you can propose another date and we will see which fits better.
Cheers, Daniel