Please take a look at the development releases listed on the Notify project page.
As you can see, the 7.x-1.x-dev version is dated 2013-Oct-01. If you click the link and go to the release notes, you'll also see: "Last updated: October 1, 2013 - 04:31".
However, if you look at the commits for the same project, you see that the last commit was "November 1, 2013 10:29" (this is correct).
Also, if you download the tarball (notify-7.x-1.x-dev.tar.gz) and look at the file notify.info inside, you'll see this comment: "; Information added by packaging script on 2013-11-01". I also checked the code, and the package contains the latest version (so the only thing wrong is the date listed on the project page).
I haven't made a systematic study of this, but I also noticed that the LinkedIn Integration project page dates the latest packaged dev version 2013-Oct-01. However, the commits for the same project, you see that the last commit was "January 8, 2013 3:33".
To summarize the issue: Committing a snapshot to the repository gets it committed, packaged and made available for download. But the date displayed for dev-release snapshots on the project page is wrong for some projects (including the two mentioned here). However, this glitch does not effect all projects, but I see no pattern.
Comments
Comment #1
gisleUpdated with observations about other projects.
Comment #2
gisleComment #3
drummUpdating the title to point out the root cause.
Comment #4
drummComment #5
drummCommitted & deploying http://drupalcode.org/project/project.git/commit/867afb6 to fix this. The dates will update on newly-packaged dev releases.