Apple has released Digital Camea Raw Update 2.3. In case you own one of the following cameras: Canon EOS 50D, Nikon D90, Sony DSLR-A900 or Nikon Coolpix P6000 then you should get it. The software will extend RAW file compatibility for Aperture 2 and iPhoto ‘08. Digital Camera RAW Compatibility Update 2.3 will need Mac OS X 10.4.11 or higher and it requires just 4MB of free space.

via Apple