YES ... WinReducer 'ES-Series and EX-Series' will be supported in the long term development cycle ... I already announced a v3.x.x.x for EX-100 (very soon) ... and for the end of 2021 all other software will get important updates.
About WinReducerOS, this is a big step in our passion (customizing Windows) because not only you will be able to create your own interface and software, with your own design in a lot of different domains (multimedia, network, shell, ...) ... and also I will provide all tools to create your WinReduced ISO because all "ES-Series and EX-Series" functionalities will be integrated and available to use with a much better User Interface and User eXperience (the one I will create or the one you will create).
The first WinReducerOS version is an alpha, I explained this choice in the WinReducerOS Forum (LINK
). And I can assure you that all functionalities from All "ES-series and EX-Series" will be available in WinReducerOS.