Starting today, the following changes apply for future TYPO3 Core releases:
The branches for previous TYPO3 releases were prefixed with “TYPO3_”. We will omit that prefix for new release branches. The 9.0 development branch will for example be just named “9.0”. Master stays bleeding edge.
This is a companion discussion topic for the original entry at https://typo3.org/article/typo3-release-improvements-v8-maintenance-release-schedule/