Is this new update fine to proceed replacing everything with a "version 5"?

[haakoth]

Yes, this is in preparation for the soon/pending KDE 6

Just say yes to replace

Plasma 6 is coming to Arch… at some point All of the KDE Frameworks packages are being renamed with a “5” at the end (e.g. karchive > karchive5). This means a lot of package updates that need a manual input this weekend but hopefully means that Plasma 6 packages are coming to test soon.