There HAS to be a new model, at least one big, cool model for a boss fight. I mean, what dungeon crawler dosen't have one? half of the villian cast (and a third from the hero cast) from Silver Tower didn't appeared on the front cover, and it would be weird to have only two
Personally I'm hoping for they to add a Slaughterbrute, or perhaps a Chimera; a big monster is always good for a game like this.
And you should read the full article; this game is full Order vs. Chaos, because Chaos is trying to reclaim one of the cities founded on the las Season of War (and that is totally awesome).
But that being said, Destruction and Death forces also failed to gain one of the cities last season, and that means that they could also get a new WQ, campaing and even an update. Death really need to get some good stuff soon, Destruction can (but dey'z ain' wantin') a bit more; Ironjawz, Bonesplitterz and Beastclaw Raider are on a good spot, the last two specially since they've got artifacts and traits. But Death only have Fleash-Eaters Courts, worst yet, they don't have any exclusive rules yet.
But I'm sure that GW is working on that, I mean have you seen this month? they pumped up hard both AoS and 40K, and they will keep the pump on during February too!
OH!, also, to close January with a golden clasp: Start Collecting! Daemons of Tzeentch is on the way!