This solution worked!
After upgrading an iPad Mini to iOS 8, I no longer could see my audio devices in Airplay.
After following aellis1519 suggestion....Now I see them consistently: Phillip Fidelio and Pioneer X-SMC3
aellis1519 May 7, 2013 9:08 PM
Re: No Airplay icon on iPad 2. in response to Texas Mac Man
I found this fix from 2010 when someone upgraded their software and ended up loosing Airplay....sounded crazy but totally worked! My airplay icon is back, and working!!
On your iPad, iPhone or iPod touch, navigate to Settings > General > International > Language and change to a different language (e.g. if you are using English, switch to French). The device will go through a language switch/reset process, and your AirPlay icon should be restored.
Next navigate back to Settings > General > International > Language (translated into the new language, of course) and switch back to your original language.