It is with great sadness for me to have to write this. Leonard Nimoy, the English voice of Master Xehanort in Kingdom Hearts: Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance, known mostly for his role as Spock in Star Trek, has sadly passed away in his home in Los Angeles after complications with COPD. On behalf of the KHV staff, I would like to extend my deepest condolences to Nimoy's family.
RIP Leonard Nimoy. It's hard to imagine Master Xehanort voiced by anyone other than yourself.
Credit to HeartlessOfLight for letting me know.
Leonard Nimoy Passes Away at 83