A Mozilla illetékese, Ari Jaaksi már decemberben jelezte, hogy befejezik a Firefox OS for smartphones fejlesztését. Most pedig kiderült, hogy mikor éri el a nevezett rendszer életciklusa végét:
We will end development on Firefox OS for smartphones after the version 2.6 release
Through the work of hundreds of contributors we made an awesome push and created an impressive platform in Firefox OS. However, as we announced in December, the circumstances of multiple established operating systems and app ecosystems meant that we were playing catch-up, and the conditions were not there for Mozilla to win on commercial smartphones. We have decided that in order to succeed in the new area of Connected Devices we must focus our energy completely on prototyping the future and exploring how we can make the biggest impact in IoT.
Therefore we are announcing our plan to end-of-life support for smartphones after the Firefox OS 2.6 release. This means that Firefox OS for smartphones will no longer have staff involvement beyond May.