"Welcome to the Adobe® Photoshop® Camera Raw 5.4 plug-in release candidate on Adobe Labs. The Camera Raw plug-in provides easy access within Photoshop to the raw image formats produced by many leading professional and midrange digital cameras. The ‘release candidate' label indicates that the plug-in is well tested but would benefit from additional community testing before it is distributed automatically to all of our customers. The Camera Raw team would like the community to help verify the quality of the plug-in through normal usage as this will ensure that the plug-in is tested on a diversity of hardware and software configurations not available internally at Adobe."
Newly supported cameras in this release are: Canon EOS 500D (EOS Rebel T1i), Epson R-D1x, Hasselblad CF-22, CF-22MS, CF-39, CF-39MS, CFH-22, CFH-39, CFV, 503CWD, H2D-22, H2D-39, H3D-22, H3D-31, H3D-39, H3DII-22, H3DII-31, H3DII-39, H3DII-39MS, H3DII-50, Kodak EasyShare Z980, Nikon D5000, Olympus E-450, Olympus E-620, Panasonic Lumix DMC-GH1, and the Sigma DP2. If you've got one of those cameras, and you've been itching to use ACR with the raw files, here's your chance.