Here is a proposed release schedule for 0.20.0, the next major release of Bitcoin Core. Like for previous major releases I've aimed for a release 6 months after the last (#15940).
2020-03-01 :heavy_check_mark:
- Open Transifex translations for 0.20
- Soft translation string freeze (no large or unnecessary string changes until release)
- Finalize and close translations for 0.18
2020-03-15 :heavy_check_mark:
- Feature freeze (bug fixes only until release)
- Translation string freeze (no more source language changes until release)
2020-04-01 :heavy_check_mark:
- Split off
0.20branch frommaster - Start RC cycle, tag and release
0.20.0rc1 - Start merging for 0.21 on master branch
2020-06-03 :heavy_check_mark:
- Release 0.20.0 final (aim)
If any specific dates or timeframes are a problem for you, let me know.