According to PC Magazine, Hasbro's 3D Transformers facemasks, which are a cross between new 3D glasses and the Optimus Prime / Bumblebee voice changer are due for release on May 16t, six weeks before the release of Transformers Dark of the Moon.
"The Transformers Cine-Power 3D Masks are RealD-compatible passive 3D glasses built into plastic masks shaped like the faces of Optimus Prime and Bumblebee, from the upcoming film Transformers: Dark of the Moon. The masks will work with any RealD movie theater, and are compatible with Vizio Cinema 3D HDTVs and other passive 3D HDTVs. They will retail for $9.99, and will start shipping to stores May 16, six weeks before the film's release." report PC Mag.