The latest beta is now available to members of the iOS developer program. People familiar with beta 2 said one of the newest additions automatically deletes pictures from Photo Stream when they are deleted from the iPhone.
Currently, pictures taken on an iOS device are automatically synced with the Photo Stream feature of Apple's iCloud. But if a user deletes a picture from their iPhone, it is not removed from iCloud. Instead, users must unsync their entire photo library in order to remove an uploaded photo.
Those same people said that the latest beta of iOS 5.1 is known as build 9B5127c. Some issues do reportedly remain with the pre-release software, including freezes related to Setup Assistant and the shake-to-shuffle feature in the iOS music player.
iOS 5.1 beta 2 is compatible with the iPhone 4S, iPhone 4, iPhone 3GS, iPad 2, iPad, and third- and fourth-generation iPod touch. It is an 801MB download. A new beta firmware for the Apple TV was also issued Monday, and allows developers to test iOS 5.1 applications with AirPlay on the set-top box.
The first beta of iOS 5.1 was provided to developers in late November. It included references to a next-generation iPhone, labeled "iPhone5,1," as well as third-generation iPad models, "iPad3,2" and "iPad3,3."