The Facebook iOS SDK 3.0 Beta says \"These new features work with iOS 4.0 and later.\" Does that mean that it won\'t work on iOS 3.x? Does that mean that if I have an app th
Pretty safe to say yes, you wont be able to use iOS SDK 3.0, or you will no longer be able to support iOS 3.x.
You can also interpret that to mean that you can use it on iOS 3.x, but some of the features may not work at all, in which case there is no point in changing the SDK that you use because you wont be able to take advantage of the new features.