Perhaps the dates went out of synch when upgrading the server... or they "touched" the files or something. No idea.
I just noticed 2.0.40 was released on the 9th of August, so I was three days "late" upgrading mine, lol.
Naw, I won't upgrade to any alpha/beta releases, at least not on a "production" server... If it ain't broken, don't fix it, some wise man said.