Adds full support for Aperture 3 and expands support for GPS logging devices. ($30 new, free update, 6.5 MB)

Enhances drag-and-drop capabilities and AppleScript support, and resolves several compatibility issues. ($34.95 new, $14.95 upgrade, free update, 9.9 MB)

Adds new services for sending fax via email, fixes a hanging bug when viewing incomplete faxes, and changes the method of in-product purchasing. ($39.95 new, free upgrade from 4.x, 6.2 MB)

Fixes problems in the initial release of the Mac OS X 10.6.3 Combo Update. (Free, 785.29 MB)

Fixes problems in the initial release of the Mac OS X Server 10.6.3 Combo Update. (Free, 897.32 MB)

Addresses a security vulnerability in Mac OS X 10.6 Snow Leopard's handling of embedded fonts. (Free, 6.5 MB)

Addresses a security vulnerability in Mac OS X 10.5 Leopard's handling of embedded fonts. (Free, 218.6/379.5 MB)

Contains updated remote administration tools, documents, and utilities. (Free, 236 MB)

Addresses two bugs related to processor loads and the display backlight. (Free, 2.1 MB)

Improves high-end graphics performance in the new 15- and 17-inch MacBook Pros. (Free, 258.32 MB)

Improves overall stability in restoring backups and makes better use of destination disk space. (Free, 6.73 MB)

Adds wireless syncing, notes syncing, a ringtone editor, and the capability to archive text messages. ($39.95, $29.95 crossgrade, free update)

Adds an open interface for third party developers, improves the update and installation processes, and brings other minor refinements. (€19.99 new, free update for purchases made within the last 2 years, 1.3 MB)

Adds raw camera support for nine new cameras, expands the cache limit, and coincides with release of Photoshop Camera Raw 5.7 and DNG Converter 5.7. ($299 new, free updates for existing Lightroom and Photoshop users, 75.8/51.8/47.7 MB)

Improves performance, reliability, and font and color handling. ($349 (Professional)/$1,999 (Advanced Server) new, upgrade prices vary)