Nope!
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transactional-update.servicebasically snapshots the current subvolume (read/write), dups the snapshot, makes the upgraded snapshot the default subvolume and boots into the upgrade (read/write). -
A quarterly upgrade using the service worked like a charm: The magic of the Tumbleweed model for an end user - #3 by karlmistelberger
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See GitHub - openSUSE/transactional-update: Atomic updates for Linux operating systems