No specific info about version 1.2. Please visit the main page of Apple iMac Software Update on Mac Informer.
Easily update apps from App Store and other sources.
Adobe Updater is a utility helping you keep your Adobe programs up-to-date.
This app updates the firmware on the Radeon HD 2600 PRO card to address issues.
The iMac SuperDrive Firmware Update 1.0 installs new firmware.
Adds support for the Apple Thunderbolt to Gigabit Ethernet Adapter.