It looks like Apple may have dropped the ball on the iOS 8.0.1 release. If you saw a update in your setting you where not seeing things it was really there. It looks like there was reports of the update causing a lot of problems for users after the update.
Most of the problems reported where with Touch ID software and cellular service. After looking looks like Apple has pulled the update. And is offering a solution to the problem in the shape of a downgrade. Yep you read right a downgrade.
So if you installed iOS 8.0.1 make sure to downgrade back to iOS 8.0 asap.