Photo Mechanic version 4.6.2.1 is available for download immediately, with a 20-day trial version allowing new users to give the program a spin. Photo Mechanic is compatible with Microsoft's Windows 7, Vista, or XP Service Pack 1 - 3, as well as Apple's Mac OS X 10.4.11, or 10.5.x operating systems. Customers who've purchased Photo Mechanic since February 2009 can upgrade for free. The full program costs $160 for new users, or $100 for users upgrading from an older version of Photo Mechanic 4.x. If the physical CD isn't required, there's a $10 discount available; International users needing the CD will have to pay an extra $15 for shipping.

Courtesy of Camera Bits, the full list of changes in the new version is as follows:

• Improved support for the Canon EOS-1D Mark IV model.

• Fixed problems with soft crops in RAW files not showing correctly, primarily with DNG files that have a cropped preview generated by DNG Converter and Nikon NEF files saved by Capture NX 2 with a rotation or crop applied.

• RAW files with existing Photo Mechanic end-of-file preferences will be updated as necessary regardless of setting to "Allow RAW (non-DNG) files to be modified" (so that the existing data doesn't become "stale").

• Fixed a bug in the Save As dialog where the root save folder path wasn't being saved and restored properly in the preferences.

• (Win) Tag/Rating/Color Class advance to next photo in Preview window now works properly and updates the info text and histogram.

• (Win) Fixed Arrangements issue when reusing Contact Sheet tabs.

• (Mac) Loupe tool now works for RAW files that contain no embedded JPEG preview as long as ImageIO supports them.

• (Mac) Fixed Tooltip "ghosting" issue.

More details and the program itself can be found on the Camera Bits website.