The release notes really want to be in source control,
That is the reason that I always kept the ReleaseNotes in the repository. Then there is no possibility that the ReleaseNotes can ever become decouple from the release even after years and changes in ISPs.
That is the same reason that I keep all of the Documentation in the repository, so that we have versioned documentation for the release.
Lots of advantages to keeping version related stuff inside the release!
