Wow, that was quick. Wont be to long and then the 4.1 will show up in iTunes. So if you have Jailbroken and Unlocked your iPhone, just say NO!!! when it asks you to upgrade from 4.0/4.01.
Apple has just pushed iOS 4.1 Beta 3 to the developers for all iPhones and iPod touches. This beta build, like all the previous betas is meant for developers only. Only members enrolled in the iPhone Developer Standard or Enterprise Program can access these bits of by signing into Apple Developer Connection.
More updates as they come.. Stay tuned !!