This year Birdman was not eligible and WGA has Whiplash in the Original Screenplay category while the Oscars for some reason has it in the Adapted category. Both The Grand Budapest Hotel and Boyhood are nominated for Original Screenplay. But without Birdman in the category it is hard to tell what implication this will have.
Winner of the Best Adapted Screenplay is The Imitation Game
Winner of the Best Original Screenplay is The Grand Budapest Hotel