According to C Trent, it is official.
Personally, I think its a bad move. MLB debut, on the road in Yankee Stadium? Two starts ago he gave up 4 HR in 1 game in AAA but now he is ready to start against the Yankees? I like Daryl Thompson, so lets not get this wrong, but I am just not sure he is quite ready for the major leagues yet. I hope he throws a perfect game, but I am not too optimistic about him right now in the major leagues.