Standalone game on Civ6 engine

[SWY]

Hello everyone! After we got Colonization on the Civ4 engine and Beyond Earth on the Civ5 engine, do you think Firaxis will come up with another stand alone game on the Civ6 engine before they move on to creating Civ7?

What 'theme' do you expect they'll come up with this time, if any?