PS Access, How Witcher 3 Lets You Make Witcher 2 Decisions (And What They Mean); https://www.youtube.com/watch?v=X_INEnvuPnk
Of interest here is confirmation of:
Fate of Aryan
Iorveth or Roche path
Fate of Sile
Rescue of Triss or Saskia/Anais (note that here there doesn't appear to be any further insight into Saskia's fate after her defeat as Saenesthesis or however you spell it
Fate of Letho
Also, unless I somehow missed it, I didn't see any questions regarding the possible fates of
Henselt/Stennis
I'm actually fairly pleased with the choices they included, as some of them aren't really critical inflection points, but are more, you know, flavor for long-time fans of the universe. I mean, it'll probably mostly be cameos and what not, but still.