Here is a proposed release schedule for 0.15.0. Like for previous major releases I’ve added 6 months to the previous release schedule (#8719).
02017-07-02
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2- Open Transifex translations for 0.15
3- Soft translation string freeze (no large or unnecessary string changes until release)
4- Finalize and close translations for 0.13
5
62017-07-16
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8- Feature freeze (bug fixes only until release)
9- Translation string freeze (no more source language changes until release)
10
112017-08-06
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13- Split off `0.15` branch from `master`
14- Start RC cycle, tag and release `0.15.0rc1`
15- Start merging for 0.16 on master branch
16
172017-09-01
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19- Release 0.15.0 final (aim)
If any specific dates or timeframes are a problem, let me know.