Mozilla shipped Firefox 80 Beta and Developer Edition today. So far, we have posted four site compatibility notes, and one of them is something that has been postponed because of the COVID-19 pandemic.
Yes, breaking changes are gradually coming back with the upcoming releases. To repeat, these things are currently planned:
- Removing DTLS 1.0 support from WebRTC —
- Enforcing MIME check for worker scripts — Firefox 81
- Removing FTP support
- Removing Application Cache storage
- Making cookies
Also, as a reminder, Firefox 68 ESR reaches the end-of-life soon in September. If your organization is in the process of upgrading, check out our Firefox 78 ESR site compatibility notes.