Facebook updating their Android app outside of Google Play for some users

For the past couple of days users have been seeing a download notification for a new Facebook build (140579 or 141046). The notification would get stuck for many folks, and reboots or battery pulls just caused another notification and stuck download. The whole thing pretty much acted like a clunky, amateurish malware attack. It's not. The update is legit, and from Facebook. They are pushing out an update outside of the Play Store (which is a direct violation of the developer agreement, by the wa...