It's been some time since the latest iWork refresh. iWork '09 was released nearly three years ago, which is a long time in computer business. Several events were suggested as a reason for Apple to delay the release of the next version of their Office suite: the new iPad, Lion, and lately the release of iCloud was accused to be the reason to further work on Pages, Keynote and Numbers to work seamlessly with the service.
All those events came and went, yet a new version of iWork is still not
Any program which runs right is obsolete.