Slightly Crazy Programmer
I don't think that's a hint towards anything in particular. The line "A new RPGMaker draws near. Command?" is a Dragon Quest reference. In the first game, a similar line is shown when a battle starts. But I could be wrong. At this point, everything is speculation."Command"
I wonder what that means? Maybe some kind of Command system to use instead of formulas? Maybe even being able to download new commands like plugins and use them visually with no typing involved? That sounds possible. It's not hard to implement and could make the engine a lot better for it's main audience.