The engine is always growing and getting new features. Here's a few we talked about recently : New battle types, Visual Cutscene building tool, Character Maker tool, Shop and item builder tool.
Currently we're focusing on the release of our game Dokimon which we're planning to push out this year. But you can read more about what's to come for Monmae at this link.
If you're curious what MonMae has to offer currently I'd like to suggest checking out the MonMae page, playing the game preview embedded into the page, or watching the YouTube tutorials of the engine.