I'm a bit peeved at this one but Facebook just updated on my phone and added a "Camera" app. No it's not Instagram as most people would guess. It's just another way Facebook is trying to invade your privacy I guess. Glad I never use it, because now I'm removing Facebook from my phone permanently.
I didn't notice the first time around but they've also added a messenger app. Three apps for one product? Where does it end??
For more details see the article here: Facebook for Android gets updated, new features added