Mark Ryan's site has been updated with clarification on his role in the Transformers Movie and Game.  Apparently he will play Ironhide in the game but not the movie.

"...The reports that I'll be voicing "Ironhide" in the movie are mistaken or misquoted lifts from various sources. Even Wikipedia has it wrong.

The post clearly states: "I've recently recorded two voices for the Activision game based on the film to be released at around the same time as the movie. I voiced both Ironhide and Hoist for the game."

I was also very careful to say: "I recently got called back to the studios by Michael Bay to voice more material to be utilized in editing the Transformers movie to be released during the summer."

So to be clear; I have recorded voices for the game but I cannot confirm (due to obvious contractual reasons) if any of that Autobot/Decepticon material will make it into the final cut of the movie.

As previously stated in my updates; I worked both on the set and in the post production phase directly for Michael Bay for the purposes of timing and pacing for the actors and then character material used for the purposes of editing scenes and guide-tracks for dialogue. This was a unique experience and great fun to be involved in, both on the set and in the editing suite. Michael was great fun to work with and we had plenty of laughs trying out various humorous ideas for the Autobot characters.

I have total respect for the voice actors who did the original material and really hope the fans enjoy all the creative effort that has gone into this production, which looks absolutely amazing!

Best wishes to everyone in "Dear Old Blighty" and especially all those fanatical and excited  Transformers devotees, waiting with bated breath for July 4th!

Mark Ryan"