Bumping the version number in the tutorial is good because it demos how software releases integrate with rockcraft, and demos the chisel feature, but I think some may interpret this as "whenever changes are made during development" and not just when software releases are made.

Yeh I was thinking about the same when I was writing that sentence. How else would you word it?

Perhaps something like this

    ``rockcraft pack`` will overwrite any existing image with the same filename. 
     Updating the version field in the `rockcraft.yaml` will automatically update the 
     filename upon packing, preventing conflicts with prior image versions.

Hmm, that makes it sound like the motivation is around keeping files around, do you think it is more related to releasing?

I would argue in the tutorial its more about keeping the images so we can compare the chiseled and unchiseled images, but in the context of software development I would only expect the software version to be bumped occasionally.