Just to clarify all of this: >From now on 5.23 branch is forked. Master is open to any new changes, new features and new strings and can depend on new frameworks.
The 5.23 branch is open to bug fixes only, but doing these bugfixes is actively encouraged! They should be committed on master and backported. The period between 5.22.90 and 5.23.0 is treated exactly the same as the stable release cycle that happens throughout the rest of Plasma/5.23. David