Well it depends.
If you follow the Schedules/Plasma 6 - KDE Community Wiki you will see when what will get released upstream. If you check our branches you will see in which of them we have which version of Plasma: Branch compare for Manjaro. Most of our developers are on the unstable branch.
With Linux you can decide when to update. If you see a lot of movement with package update, you simply don’t update and maybe follow our mailing list to get real-time updates when which package land where: The manjaro-packages Archives.
You can even test the new Cosmic Desktop Environment with our new distribution: Manjaro Immutable Out Now for Community Testing.
Getting out a good user experience is hard to achieve. So far most of our users appreciate what we do and how we do it.
I’m sure we will see a groundhog day thread like this for 6.2 series of Plasma. My answer might be then: Maybe in 2025 Spring
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