[TASK] Add branch info

Author: sbusemann

README.md

@@ -504,6 +504,12 @@ to accept only bugfixes if I can reproduce the issue.
 2. Run `ddev start`
 3. Run `ddev initialize` to setup configurations and test database
 
+#### Branchen
+
+* Main Branch - Next Major Version
+* typo3-v12: Version 5.x for TYPO3 12
+* typo3-v13: Version V13 for TYPO3 13
+
 ## What's not (yet?) possible at the moment
 
 * Make wildcard usage available in browserlanguage (like "en*" for all english browserlanguages)