Ryan Reynolds will be playing Green Lantern.
And here's another link.
I am not sure how I feel about this. My head may explode, what with this being the THIRD comic book character he'll have played. And what with me wanting him to do AWESOME as Deadpool and somehow also pull off being Green Lantern as well (although I have faith that he can do it if anyone can). But, as pensive1 points out, I finally got my wish - #ryanreynolds was finally a trending topic on Twitter. Heh.