It's been a while but now I feel that its time to start thinking about dropping Python 2.7 support in Misago. For long time the primary argument against this was "there's still number of great libs and tools that are python 2.7 only", but this has turned around. Today Python 3 is the language that cool crowd uses, and major libraries have either made the move or were superset by new solutions.
I would also like to make Misago Python 3-only. This change would not happen tomorrow, or in next release, but I would like it to happen sometime during this year.
I am also pleased with Django 1.11, and would like to stay on LTS until next one, so we would likely have transition period where Misago requires Django 1.11 and Python 3.4+ to run.