RAW format compatibility with iPhoto
Would it not be safe to assume that if, for example, Canon comes out with a new camera with RAW format support their file type which is .CRW would automatically work with iPhoto. The same would be for Nikon, Olympus and the rest. If the new camera uses the same file extension as one of the older cameras by the same manufacturer on Apples compatibility list the new camera will be compatible.
Here is the list of extensions I found by manufacturer.
.raf (Fuji)
.crw .cr2 (Canon)
.kdc .dcr (Kodak)
.mrw (Minolta)
.nef (Nikon)
.orf (Olympus)
.dng (Adobe)
.ptx .pef (Pentax)
.arw .srf (Sony)
.x3f (Sigma)
.erf (Epson)
.mef .mos (Mamiya)
.raw (Panasonic)
.r3d (Red)
Mac Pro 2.66 GHz, MacBook Pro 2.1 GHz, Mac OS X (10.4.11), 250GB, 500GB, 500GB, 320GB HD's; 3GB RAM