Japanese Twitter user @khhff_kento purchased a copy of the Tokyo Ghoul manga and found on a slip of paper around the manga that "Tokyo Ghoul is Getting a Live Action Movie!"
『東京喰種実写化決定！！』— T.S真 (@khhff_kento) June 14, 2016
Source : Tokyo Otaku Mode
UPDATE : Tokyo Ghoul:re manga 7th volume which will go on sale on June 17 has announced a live-action film adaptation of its franchise.
Source : Otakomu