Situation
As announced in the Firefox mailing list, they are experimenting with a 2 week cadence instead of a 4 week cadence. See Firefox Release Calendar.
https://docs.cypress.io/app/get-started/install-cypress#Browsers states:
The latest 3 major versions of the following browsers are also supported:
which includes Firefox in the list.
Supporting by numbers of versions, instead of by a period of time, means that Firefox versions will officially become unsupported twice as fast.
3 major versions would be reduced to 4-6 weeks instead of 8-12 weeks.
On Sep 1, 2026, Firefox 155 is released, so Firefox 153 released Jul 21, 2026 becomes the lowest supported version.
Suggestion
Consider modifying the support statement to time-based criteria to cover the age of a browser release - for instance 3 months. This would also have the advantage of being able to cover Firefox ESR releases, which lag behind in the version number, however they generally get a monthly patch update.
Just for comparison, Docker Desktop has a 2 week cadence and specifies support for 6 months.
Situation
As announced in the Firefox mailing list, they are experimenting with a 2 week cadence instead of a 4 week cadence. See Firefox Release Calendar.
https://docs.cypress.io/app/get-started/install-cypress#Browsers states:
which includes Firefox in the list.
Supporting by numbers of versions, instead of by a period of time, means that Firefox versions will officially become unsupported twice as fast.
3 major versions would be reduced to 4-6 weeks instead of 8-12 weeks.
On Sep 1, 2026, Firefox 155 is released, so Firefox 153 released Jul 21, 2026 becomes the lowest supported version.
Suggestion
Consider modifying the support statement to time-based criteria to cover the age of a browser release - for instance 3 months. This would also have the advantage of being able to cover Firefox ESR releases, which lag behind in the version number, however they generally get a monthly patch update.
Just for comparison, Docker Desktop has a 2 week cadence and specifies support for 6 months.