Along with Apple’s release of iOS 5 beta 6 (and associated iTunes and XCode developer updates) earlier today, Apple has also released a new developer beta of iWork for iOS.
The newly updated beta likely only includes subtle updates to work with iOS 5 beta 6, as I have not yet been able to discern any noticeable changes to either the interface or the operation of any of the three included apps: Pages, Keynote, or Numbers.
The initial iWork for iOS betas, which were released to developers to test iCloud support, were released a little over two weeks ago on August 2 2011. The updates are available from the iTunes Developer Portal to any current paid member of the iOS Developer Program. Let us know if you find any changes.