"Future installments" refers to something that will occur or happen in the future in a sequential or series of parts, usually in a planned or organized manner. Full definition
In future installments in this series I'll be discussing the cards I'll be canceling outright and the new cards I'll be applying for in the new year. (freequentflyerbook.com)
Some of the same techniques I've been using for a while to achieve this will be described in future installments of this series. (onnit.com)
Well, I don't quite agree with that, but I think things will need to change for future installments, because the current model has several adverse side - effects. (tekkengamer.com)