This is annoying in the sense that I have a hifi dock that cost over £200 as well as numerous leads and things around the house that our two iPods, two iPhones and the iPad connect to. Then suddenly my next phone will connect to none of these things, all so apple can make the phone a tiny bit thinner. Mmmm... Progress for progress sake?
Well use some forward thinking. I would not be getting any expensive dock products as wireless is the way to go. Ether Bluetooth or wifi.