Yes it talks about

the show catching up to the books. I like the idea of having a sort of prequel like Spartacus did.

The article also states:

A lot of characters and subplots may get left behind as well, simply because it's not feasible for the TV series to incorporate that many stories and actors ("Feast" also ignores some major characters, like Peter Dinklage'd Tyrion and Emilia Clarke's Daenerys, which would not go over well).