He read the treatments at least before jedi while working on his book, which was published in '84, i believe. But according to a recent article, he still believes that what he read will be the basis for the new trilogy.

"Pollack calls the prequel trilogy “dreadful” but has very positive things to say about the ideas behind the potential next two trilogies, stories he confidently believes Disney will use, claiming they represent one of the reasons Disney made the acquisition.

http://screenrant.com/star-wars-episodes-7-9-trilogy/

But I don't know anything about Pollack. He may not know what he's talking about, and those treatments could be completely obsolete now. If anyone here knows Michael Arndt, just give him a call and get back to us. :)