Camera Roll as an Album might not be visible (perhaps a big) but all the photos should still be there if you select Photos (instead of Albums) at the bottom of the Photos app.
Gotcha. Selecting Photos shows my pictures grouped by time but there are two "Yesterday" with one being a single screenshot. Today has two groups taken divided (it appears) by location.
In Albums - Recently added, I'm seeing mixed up pictures (no order based on locate, date, etc.) and duplicates.
I'm not worried about it in a beta, just lamenting a nice order from the oldest picture to the newest picture on my phone. And get off my lawn!