Although Apple might never have admitted there was any issues with AirPlay streaming following iPhone 4S and iOS 5 launch, there are plenty of reports to the contrary. However, it looks like the issues have been resolved with the release of iOS 5.1.
Libratone, producer of the high-end AirPlay speakers Libratone Live and Lounge, have posted a note to their users on their Facebook page recommending them to upgrade to iOS 5.1 to combat dropped stream experienced especially by iPhone 4S owners. Earlier the company was vocal about the issues their customers experienced with AirPlay streaming, especially when it came to iPhone 4S, and that they were working with Apple to identify exactly what the issue was.
We would love to hear from any of you that have upgraded to iOS 5.1 and have tested AirPlay streaming afterwards to get your view if the issue has been fixed or not, so please leave comments with this post.