@Ch. 560 p.15 I don't know who among uchiha's would help kabuto and oro to read what is in the stone tablet. But I'm thinking 1 person who could help them or give ideas what is in the stone tablet and that person is Danzo.
Yes maybe its danzo!!! if you can recall kindly read this http://www.narutobase.net/manga/Naruto/478/10
Tobi thinks that oro helped danzo to implant hasirama's dna to danzo's body. With this we can assume that danzo also help oro to know what is written in the stone tablet because danzo have MS eye. Don't you think oro would not ask any favor for helping danzo?
With the help of danzo.. oro and kabuto managed to do some experiments and hypothesis that will improve madara's body.