Plasma 6.3.4 landed in Arch stable 16 hours ago. It is still not in Manjaro unstable.
It seems that either
Either way, there is an error in the system somewhere, and I hope it gets addressed.
I remember unstable branched synced quite often - but lately I have heard several times Philip saying
Stop chasing Arch
That likely means the sync is manually initiated when … ?
That is all I know 
It is now. 
FYI, syncing with Arch is done manually. There is no problem.
So how is the edge / unstable separation coming along?
@romangg talked about it last year but either I’ve missed news on that front or it’s indeed been quiet.
OK, I just got Plasma 6.3.4 installed. I wanted this update because it fixes the bug that caused notification text to be covered by the icon.
I was under the assumption that Manjaro unstable synced with Arch stable automatically.
I have been there too - but educating myself on build order taught me - it is not that simple.
→ DeveloperWiki:Toolchain maintenance - ArchWiki
At times it has to be manual - especially if important libraries has been updated - then packages need to be rebuilt in a strict order
→ Automate kernel rebuild on toolchain update (#4) · Issues · Release plan / Releases · GitLab
I still don’t understand the process fully - but I believe @Yochanan has a very clear understanding.
→ Improve Release Process and Branches (#3) · Issues · Release plan / Releases · GitLab