Two problems hit me at once.
All of my albums (except for the people album?) have vanished from Photos. They are all still listed under General Photos, however I can't even access the Recently Deleted folder, since that is under albums...
Open up Facebook, Twitter, Instagram, or even open up Wallpaper in Settings, and those apps still tell me that I have albums and I can still access those albums with ease, through those apps.
Open up iMessage to see what I can do there, and it shows my last recent ~100 pictures in the scroll bar. Press photos to access more, and it tells me I have no photos or videos whatsoever in the phone.
Started last night, out of the blue. Updated to Beta 7 just a few minutes ago to see of it would fix it and nope, exact same as before. (Should probably add I'm on a iPhone 6 Plus).