Being that Apple is discontinuing the 5 and is "replacing" it with the 5c, I'm wondering how long stock will last. I'm talking specifically about replacement phones for customers who have warranty issues on their 5. My power button is getting really flaky and I'm wondering if I wait for a month or so (if I can) if 5 stock will be depleted and Apple will replace my 5 with a 5s (I have AppleCare). Not a big deal but I thought, what the heck? Maybe wait and get the upgrade? Any thoughts? Thanks!