Submission + - Mozilla to Remove Hello in Firefox 49 (softpedia.com)
Mozilla added Hello to Firefox in version 34, released on December 1, 2014, and from the beginning, it was part of the browser's core code, but was moved in December 2015 into a separate add-on, one that came pre-installed with Firefox, making Hello its first ever system add-on.
Mozilla plans to remove Hello from the codebases of Firefox Beta 49, Firefox Developer Edition 50, and Firefox Nightly 51. Based on the currently available information, the deadline for the Hello code removal operations is for this Monday, August 1, after which the first Firefox builds with no Hello integration will be available for testing, and will ship out in the fall with the stable release.