Ciri will appear in the gameOne of Game Informer's pics shows a woman with blonde hair - and she is a lot shorter than Geralt, no less. There aren't too many blondes in the Witcher universe, and since this game is supposed to finally deal with the book series' myth arc, it would be appropriate for Ciri to be in the game.
You will have to choose between Triss or YenneferTriss has appeared in the previous two games and is the main female who most gamers would have developed attachment towards, and therefore many are already stating that they will stick with Triss. Yennefer, on the other hand, is the main woman from the books, and has been repeatedly stated to be Geralt's true love. And, of course, the Witcher games have always made sure to have difficult choices. Since this game is supposed to finally conclude the series, it only makes sense that the events which were foreshadowed for so long would finally happen. Also, the icy times of Ithlinne's Prophecy were already previewed in the first game.
Roche and Iorveth are going to join powersAnd this is going to be badass. Moreover, this seems quite real. They obviously respect each other and, if asked during Chapter 2 of Witcher 2, would refer to each other as a Worthy Opponent. Roche is a true blue Northerner and doesn't want to live under the Empire, while Iorveth is still angry over the Empire selling out the Squirrels when they lost the first war; an Enemy Mine situation may exist.
Nilfgaard will have already conquered Temeria, Aedirn and the Pontar Valley by the time this game beginsAside from making it easier for CD Projekt Red to consolidate the various endings of The Witcher 2 into one starting point for the game world, it's hard to believe that Nilfgaard won't be able to conquer those regions: Aedirn either has no king or a weak one, Temeria is either in civil war or has been recently conquered by Redania and/or Kaedwen and the Pontar Valley is either a recently formed sovereign nation or recently conquered Kaedwen territory. It's hard to believe that those regions will be able to hold out long against the might of Nilfgaard.
The mentioned Sex Face Turn on a sorceress is with Yennefer.Still amnesiac like Geralt, she wasn't quite as lucky in finding friends that knew her before and was led astray by those who would manipulate her. A roll with Geralt breaks the amnesia.