For people asking about Iorveth / Saskia,
https://twitter.com/Marcin360/status/617957157934379009 at least he mentions they can be alive. Whether they'll ever feature in the game is something else entirely.
Well, he tells they are both safe (not just can be alive), which is fucked up from my story perspective. I kill the dragon practically on every play through, and the last thing I want is her miraculous resurrection. The same with Iorveth - I never go to save him in Vergen on Roche's path, and never save him in LM as well.
If they make it optional, depending on another two extra-questions about the past (they will have to add them to Geralt's conversation with Voorhies in Vizima), it will be super. If it is just like with Thaler - it would suck big time because TW2 had much more bearing on events and characters of TW3 than TW1.
TW3 already has a crap-load of character and motivation inconsistencies and retcons. The last thing I want is more character resurrections. I sure as hell hope the expansions and EE will make a story of TW3 better, not worse.