Dream Theater's Singer James Labrie posted the following message on his official forum:

"Hi Everyone,

Yes the rumor is true. I have been in contact with Dirk Ulrich and we have agreed to do this album which will be incredible to say the least.
I do know who the other singer is but won't say at this point. I will wait until everything is official and all legalities have been dealt with.
All I can say is this individual is very well known and one of the top opera stars of today.

Great seeing you out on tour. We are having a blast and the shows have been fantastic.

See you around.

Cheers,"

James.

Source:	jameslabrie.com
Band profile:	Dream Theater