Firefox is phasing out traditional sideloaded apps, but it's not as reported. Almost all of LibreOffice's UI is ported to GTK, Google wants to help WordPress admins, and Python goes annual.
Links:
- Firefox to discontinue sideloaded extensions
Firefox 70.0.1 release notesDisable LSNG (LocalStorage NextGen) in Firefox 70 release for dot releaseLocalStorage/QuotaManager: known issue on beta 71Native GTK Dialogs in LibreOfficeLibreOffice » vclNative GTK Dialogs - current status and future workAccepting PEP 602 -- Annual Release Cycle for PythonChanging the Python release cadencePEP 602 -- Annual Release Cycle for PythonSite Kit is now available as a developer previewSite Kit is now available for all WordPress sites