As we are going to backport changes from whatever releases WordPress will have on the 4.9.x line, it is hard to provide commitments written in stone, but this is what we are planning to have.
- Patch releases will be published ASAP after WordPress will publish a new release on the 4.9.x line. ( At the time of writing, the current calmPress release is 0.9.9, and the next patch release will be 0.9.10 ).
The intention is to have only major bug fixes in the patch releases, but we might introduce also non critical fixes and changes added to the relevant 4.9.x WordPress releases. - End of support is scheduled to the 31st of December 2021.