I like him rest of year. He seems to be Julio's replacement. So even when/if Roddy returns, Douglas will likely move inside to the slot. So Davis will get plenty of snaps, in a passing offense. Should be good value in PPR, although Gonzalez will still be the primary red zone target. If Davis can catch 7 balls for 80 yards, I'll gladly take the 15 points.
I'm curious about this as well - and no one seems to be talking about it. If I'm not mistaken, Davis was directly behind Julio on the depth chart with Douglas behind White... obviously the depth charts are now updated reflecting injury situations, so neither White nor Jones is showing up on their official depth chart.
Regardless, the Falcons cannot run to save their lives and are 4th in passing offense. If Davis holds the Julio role after White's return with Douglas kicking into the slot, he should retain value.