Yates is probably best known as the director of Harry Potter and the Order of the Phoenix, as well as the sequels that followed. He's definitely got the chops for a massive project like this. If he can handle the rabid fans of Harry Potter, The Hobbit should be child's play. Order of the Phoenix might be my favorite of the Potter films, but Half-Blood Prince left a lot to be desired. I still think Yates is a good choice. Probably better than Jackson in a way, because it might be beneficial to see another person's take on it. We already know what Jackson would do.
Deadline also notes that a couple of names are also on WB's list, one of which will have LOTR fans rending garments and gnashing teeth if it comes to pass: David Dobkin(Wedding Crashers
Warner Brothers is still pushing hard for Jackson to take over, but his asking price will be steep, and given the number of producers on the film(including Jackson himself) there isn't much loot left to give up.