@Popskinz: Yeah, but I'm sick of cliffhangers. Just finish your stories, jesus.
But they did. The Witcher 2's story is finished - you find the Kingslayer, you resolve the Temerian crisis and the deal with Saskia.
The search for Yennefer and Ciri is the series' driving plot, the ending of 2 set everything up in such a way the third game will focus purely on that and Nilfgaard. It's understandable. You can't expect they'll just throw in the big guns for no reasons.
I'll throw in a spoiler warning here which you clearly failed in doing.