Newsbrief by Michelle Ruhfass on Tuesday January 10, 2012.
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Apple has made available its iOS 5.1 beta 3 for the iPhone, iPad, and iPod Touch to developers via its program portal and over-the-air. Beta 3 restores the ability for iPhone 4S users to toggle 3G on and off again, which will help save on battery life. The release notes also indicate that the new version of iOS offers a new API to mark files and directories that should not be backed up as well as some bug fixes and minor improvements.source: Apple, via: Cult of Mac