chautemoc: Why is Atari doubtful? They published the first game.
That + Square Enix thing makes Atari seem most likely.
They published the first game - that's exactly why they are doubtful.
They published the Witcher, they published the Witcher EE, they were supposed to publish RotWW. And suddenly - CD Projekt is looking for a publisher for the Witcher 2. That obviously means they parted with Atari, unless it's some really weird way of marketing.
Besides, Atari's current DRM policy isn't exactly what CDP aims at (limited online activations with no revoke tools).
I still think that the new publisher will also be a publisher for the Witcher 2 - too many coincidences for my taste.
But CDP's marketing techniques aren't always rational. They have announced the announcement of the game that everyone knows about :P.
So the fact that they said that they don't want EA as a publisher doesn't necessarily mean it won't be EA.
It may also be Zenimax/Bethesda - when talking about the Witcher 2 the creators often referred to Oblivion and Fallout 3 as examples of very successful sequels - again - maybe a coincidence, maybe not.
There is one main reason why I hope it's Eidos - Legacy of Kain series. My absolute number one that is unavailable on any DD platform, unlike Eidos' other franchises (but I'm buying another boxed copy next month anyway :P).
And as stated before - Thief, Deus Ex, Hitman and Tomb Raider.
And SE shouldn't be a problem - both The Last Remnant and Batman: Arkham Asylum are available on Steam.