Apple Posts iWork for iOS Beta 4, iBooks 1.3.1 Update
Today, Apple has posted a developer update to iWork bringing it to Beta 4. iWork for iOS is an early version providing support for Apple's upcoming iCloud services in iOS 5. Apple has been issuing updates over the past few days, presumably in preparation for next week's media even where iOS 5 is expected to be discussed.
Meanwhile, Apple has also issued a small iBooks 1.3.1 update that is available on the App Store. The update only lists "important stability and performance improvements" but may include additional support and compatibility with iOS 5 which is sure to launch soon.