TYPO3 LTS versions receive plannable release schedule for upcoming maintenance releases. A release schedule creates transparent and plannable times for TYPO3 site owners to know when to expect a next bugfix and maintenance release. As for the regular maintenance releases we have planned the following release schedule, which usually happens on a Tuesday.
Please note, that if an urgent issue pops up, we will release without prior notice if necessary.
Security releases that will affect all supported versions, which includes the v8 series (until April 4, 2020), v9 series (until October 1, 2021) and master branch, will be released at the same time on all versions (v10 once v10.0.0 is available, v9 and v8)