The original plan[1] was to distrust both WoSign and StartCom after a certain date. Shortly after that, Mozilla met with representatives from Qihoo, WoSign and StartCom, and considered the possibility of treating StartCom separately under certain conditions[2]. The latest remediation plan seems to discard that notion (except that only WoSign will have to wait a year to re-apply).
[1]: https://docs.google.com/document/d/1C6BlmbeQfn4a9zydVi2UvjBG...
[2]: https://groups.google.com/forum/#!topic/mozilla.dev.security...