Version 4.1 is now compiled as a Universal Binary. Other changes include the addition of Apple's latest hardware updates, "My Mac models" section to Macintosh info windows, model icon previews in the main window, info on whether a Power Mac G5 model uses a built-in or external AirPort antenna, and the current iPod software version. A complete list of changes, including some known issues with the beta, can be found by choosing "Mactracker Help" from the Help menu. Please note that this version of Mactracker is beta software and may contain bugs and/or incomplete or missing features. It currently requires Mac OS X v10.3.9 or later.