According to MelodicRock.com, Alex Lifeson will be making a guest appearance on Triumph guitarist Rik Emmett's new solo project RES9 (Rik Emmett Resolution 9), due out later this year. From MelodicRock.com:

... The album ... will not be under Rik's name, rather the moniker RES9 (RIK EMMETT RESOLUTION 9) in it's expanded form. Recently Rik and the other members of TRIUMPH posted a picture of the trio working together in the studio on a song for Rik's album. I can now deliver the news that the trio are recording THREE new TRIUMPH songs for the project. But that's not all. There are some other very special guests on the RES9 project - Rush guitarist ALEX LIFESON and Dream Theater vocalist JAMES LABRIE! There is a lot of effort being put into this behind the scenes, stay tuned for more!