Every 4 to 5 weeks, a new major version of { -brand-name-firefox } is released and as a result, the { -brand-name-nightly } version increases as well.
Pob 4 i 5 wythnos, mae fersiwn newydd sylweddol o { -brand-name-firefox } yn cael ei ryddhau ac o ganlyniad, mae'r fersiwn { -brand-name-nightly } hefyd yn cynyddu.