New Facebook App Update Not Working
Edit: this appears to be a concern that Facebook recognize. It's a concern with the Facebook application, and also not a generalised Play Store concern.
This is what benefited me at least.
- Settings > Apps > All > Google Play Store, Clear information and also Clear cache
- Settings > Apps > All > Google Play Services > Manage area, Clear all data and also Clear cache
It does not hurt if you restart your phone prior to you attempt updating facebook again. As well as, the mount was SLOW. Simply at least 4-5 mins. But, it did work. If not try to uninstall it, or simply wait for a fix.