Well tags are usually perceived as immutable but one can imagine adding an info to the tag with the "next version" coordinates. For example, tag v1.0: and a te

Well tags are usually perceived as immutable but one can imagine adding an info to the tag with the "next version" coordinates. For example, tag v1.0: and a text at the bottom of the message "Next-Version: v1.1". Or if one can enumerate versions/tags you could add back pointers to new versions/tags. Example, tag v1.1 with message including "Replaces-Version: v1.0".