Just captured the loading screen....
http://img7.imageshack.us/i/witcher2201106062010206.jpg
Looks a lot like two X buttons. Maybe it's nothing, but you never know.

In the user.ini file there are 4 interesting lines one more hint for you right there!

The high graphical settings won't happen period on a console, the memory limitations is either going to mean frequent pop-in, low detail distance, or lower quality textures....take your pick

One of the trailers had the "hidden" message from the dev's where they said that PS3 will happen one day. They could be joking though, since it was after the PS1 and PS2 (you know, those post script thingies)

Why would you want to replay the game on a weak console, when you already played it on PC?

If you want something more to speculate about:

Posted on their official Facebook page in reply to the question if it will be released on PS3:
"No plans at this point, mate, but that doesn't mean it won't happen some time."

Personally, I think that kind of statement is more like a "We aren't allowed to tell" than a "We don't know yet". Stressing the point of it being possible like that, would lead to disappointment if it doesn't happen. Something like "As of now, there are no plans for a PS3 version" would have done the job. So that statement is either diplomatically not-so-clever or a silver lining for PS3 owners. At least from my subjective perspective.

No way to tell right now. One can only hope~

really? are you serious? so any instance of an x appearing is a reference to the x button on the play station 3 controller? look at it again, it's an oval, with an x in the center and 2 dots on its side. it's a design motif. who knows where they got it from.

If anything, the greater hint is in the code, buddy.

Because

1. I´m not a fanboy
2. My laptop isn´t exactly a powerhouse
3. I like console gaming just as much as PC gaming
4. I like The Witcher 2