They say that they want to add Folders, but if it's going to happen, it'll likely be part of a larger "Armo(u)ry Rework" which isn't confirmed to be happening, but that they will gladly take community ideas for.
Specifically, ideas that can be added in ways that don't require dramatically changing the current UI.
If that time was approaching us, I assume /u/jaaxxxxon would make a thread to gather ideas, or maybe run a small contest of some kind.
Edit:
UI improvements are planned for the future, and work has been ongoing for this. Primarily armory as well as some other miscellaneous improvements.
Didn't read well enough, I guess it is soft confirmed as of this week. Can we get a thread to potentially give /u/spook- ideas please Jax?