Apple's showing off lots of software that's now optimized for the new iPad's Retina display, and an updated version of iWork is among them. Pages, Numbers, and Keynote for iOS have all been updated, still cost $9.99 each, and are free updates for previous purchasers. Apple says these new updates are coming out today, but the old versions are still on the app store as of the moment. Phil Schiller went into minimal details on what changes besides Retina display support were made, and from the looks of Apple's iWork for iOS pages on its site, it seems like there aren't any major consumer-facing features aside from support for the higher-resolution display.
Update: Version 1.6 of Pages, Keynote, and Numbers for iOS 5.1 are now available in the App store. In addition to Retina display compatibility, each app now supports "stunning" 3D bar, line, pie, and area charts. Keynote has a number of other changes, including nine new builds and transitions, as well as animations for the previously mentioned new chart types. Pages now supports the landscape keyboard for iPhone and iPod touch, but otherwise it and Numbers don't have any more new features.