Today, Apple has released iOS 5 Beta 5 (build 9A5288d) to members of the iOS developer program. This update brings some fixes, but no new major features were added, according to the release notes posted by BGR.
Apple released iOS Beta 4 about two weeks ago enabling over the air software update for the first time. From there, we found out that over-the-air software updates are less smaller than regular updates through iTunes, making the update download faster.
(via iPhoneHeat)