I'm writing plugins for almost every type. We all know that Moodle 4.0 is coming next year and for my plugins I want to know if there's any plan which interfaces/class or technologies will be removed or replaced in Moodle 4.0. I simply want prevent using something in my plugins now that is already meant to be deprecated. So, for example, will YUI be replaced? Are there any plans about removing/improving or adding a plugin type?
Sure, it's very early to ask regaring such changes. But maybe there're already some information available. The roadmap isn't very detailed about that.