The Omni Group has released a major update to its flagship OmniFocus productivity application for iPhone and iPod touch users. OmniFocus 1.7 adds new refreshed high-resolution artwork for the iPhone 4 Retina display and adds support for several of the multitasking features introduced in iOS 4. When running on the iPhone 4, iPhone 3GS and third-generation iPod touch, OmniFocus 1.7 now provides fast app switching, local notifications of due tasks and the ability to complete some operations such as database optimization while running in the background. Local Notifications allow users of multitasking-capable iOS 4 devices to receive notifications when tasks are due even when OmniFocus is not the active application and regardless of whether the user is synchronizing with a back-end server or not. The previous synced calendar alert system continues to be available for users of older devices or users still using iOS 3.x or earlier. The update also includes several other minor changes including the display of completed projects within the Completed perspective and bug fixes related to audio recording. OmniFocus 1.7 is available from the App Store for $20 and is a free update for existing users. It can synchronize with the Mac version of OmniFocus (sold separately) via Wi-Fi or a WebDAV server such as iDisk or can be used by itself as a standalone application.