Puzzled by update...

I’m running 2,522 on a RPi and the Download webpage says that 2.526 is available. My 2.522 says that there’s no later version available, but earlier today it said that 2,527 was available. I set it updating, went and chainsawed some logs, came back in to find 2.522 sitting there, denying that there was ever anything to do and that there are no new updates. Umm; what?