==== Q. Where will applications be hosted if marketplace is shut down? ====
Marketplace is not shutting down. Packaged apps will continue to be hosted on Marketplace and continue to serve Firefox OS users at least until January 2018. Future plans will be reviewed around mid-2017.
==== Q. Where can I find out more? ====
You can read a detailed plan (as of Feb 3, 2016) in [https://docs.google.com/presentation/d/10CPNIc_gl4ZvgeDVs_CwVkZTR5mjTs95l2QdiqficFU/edit?usp=sharing this presentation].