This is primarily directed to P&T, but I'm working on a project which is heavily using/extending Craft Assets. I noticed in the Asset Service there is a reference to breaking changes in Craft 3.0. I don't want to get too far down the road with this to realize it will have to be refactored.
I'm sure you're not willing to give a 3.0 release date, but any indication to what these change will look like or when they will happen is helpful.