Whatever Sony's promises may have been regarding stereoscopic 3D performance on the PS3, we're going to get what we get. And so far, that's 1080p content at 60fps (2D) turning into 720p content at 30fps (3D).
Maybe you have a super awesome 240Hz LCD. Technically, its refresh rate should probably support new FHD3D (full 3D HD) Blu-ray signals. But it can't because of this diagram (by HDGuru3D)—how the information is sent to your television.
Sony hasn't exactly been coy about positioning the PS3 as a platform for 3D gaming and movies, but now SCEA's John Koller has revealed that multiple 3D firmware updates will arrive on the PS3 by this summer: