As stated in the official announcement, he had no motivation left anymore for playing and touring, and in fact the touring was putting a great strain on him. He is currently studying and holding a new job, completely unrelated to music, and enjoying semi-anonymity.
He is still in friendly relations with the rest of the band (in fact he went to see CoB with Elias and Pasi just a few months ago), and he was the one that insisted on Pasi being the only one who could replace him, and he was right in that. I think he’s pretty happy at the moment, exam stress aside :)
That smiley face is for just one person and I bet you know who…