Normally I try to avoid saying anything about future releases; I find that pre-announcing things just induces Murphy's Law...something unexpected goes wrong, and people are disappointed when what we ship turns out to not be what we thought we shipped.
So at risk of getting myself into trouble, let me say this:
It is my goal to ship the first version of the graphical DSF overlay
editor concurrently with X-Plane 8.50.
That's an aggressive goal, because X-Plane 8.50's going to have a lot of features in it, so Austin and I are really busy right now. But hopefully by putting it out there, I can hold my own feet to the fire and get this important tool out to users!