They may not be done yet, but a lot can be done with a year, don't underestimate that. The most recent ATR, and him saying that the percentage can go from 60 to 80% in onego, along with SE outsourcing the game, suggests to me he wants to get this game out ASAP, and that they are more into development than you think.
However, we shall see at E3 2015 at the end of the trailer we'll see the facts there
. I'm 100% certain it will be there, considering their recent trends with this game.
That's another thing, he's being way to open about this game now, which also suggests that they are pretty far along into development to start PRing this game.