Source: Dark Horizons
That rumor is totally not true. In the comic books, Ra’s Al Ghul goes into a life bath of some sort and immerses himself to become immortal. So that’s probably where that comes from. But no-one’s approached me with an offer. I’d like to if it happens.
I still think it’s entirely possible that he will appear in the movie but at this point it looks like it’s just not happening. I expect a lot of false information to make its way on the web surrounding this movie and Neeson specifically stated he hasn’t been approached to appear in the movie…thus far.
If any of the rumors, regarding the league of shadows returning in this movie, turn out to be true then I’ll have a hard time accepting “the demon” operating without it’s head.