No major bump seems to be required, and if not required, should not happen.
Even a minor number bump sounds from your descriptions to be not required, but those are harmless, and at least easily allow the installed version to be discovered (for bug reports etc), so that one I would recommend. Something added to allow apps to determine what they're linked against might be useful, but is unrelated to the current issue, and in any case would only be of benefit, rather than a nuisance, if supported by all curses versions. kre