Mozilla has announced the release of the Firefox Nightly testing package as a .deb for easier installation and updates on Debian-based Linux distributions, including Ubuntu and Linux Mint. Users of these Linux distributions can now add Mozilla’s APT repository and run the command “sudo apt-get install firefox-nightly” to conveniently install the software immediately. Mozilla states that this improved installation process will facilitate more Firefox testers on Linux, leading to overall better development progress.
TLDR: Mozilla has made it easier for Linux users, specifically those using Debian-based distributions, to install and update Firefox Nightly by releasing a .deb package and providing an APT repository. This improved installation process is aimed at increasing the number of Firefox testers on Linux, contributing to better overall development.