That plug is so big, it most likely will not work with most cases. Add to that the fact that you can't charge the device while listening to music, this is ridiculous. I've never minded most of Apple's design decisions, but this one, if true makes me rethink upgrading my phone at the moment. I'm not interested in buying crappy bluetooth headphones, I already have an excellent wired pair. Hopefully Apple has some good surprises awaiting for us.