The Witcher 2, at least on steam and gog.com will not include polish as one of the languages, does anyone know if  there is any other digital version of the game which will include polish? Or if they will patch in such an option like with the enhanced edition? or is my only option to import the disc based pl version of the  game. 

Goddamnit, I want my witchermans speaking Polish!

Yes because wanting a game in your native language is dumb.  
 
IIRC, CD Projekt is a polish company, so there being polish as an available language in some capacity seems likely. Keep looking around.

" Yes because wanting a game in your native language is dumb.   IIRC, CD Projekt is a polish company, so there being polish as an available language in some capacity seems likely. Keep looking around. "

I find it strange that gog.com doesn't offer polish language seeing how it's polish and owned by CD Projekt.

Keep in mind that it's still two months till release. A lot can change during that time. I think that if there's demand, they will release Polish language pack thingy as a free patch(like they did with EE,but hopefully sooner).

The Polish voice-over/language will be available as a patch