It seems you'll be able to get additional new cables for $19 instead of paying $29 for the adapter. Still it doesn't really solve the problem of dock-style peripherals, unless they expect you to prop it up on top of the adapter. Also, it appears that analog audio (but not video) is supported with the new adapter and that there will also be VGA and HDMI cables available in the near future.

But I might wait for the iPhone 20 instead: