I really was planning on learning iOS Swift app development when the new MBP came out, but now they're saying it may be released in October. Is there anyway I can start iOS development on my PC?

As a temporary solution? I'd maybe look into an OS X VPS. Googling turned up hostmyapple.com. Seems like that or something similar would work?

Would be legal too (I think Apple may have something in their OS X terms of service that forbid you from installing it on non-Apple hardware.)

I've used MacStadium.com before. I can't remember what the price was, but I don't think it was too bad.

Or you could look into building a hackintosh VM. You won't be able to publish to the App Store from it, but you can build to the simulator at least while you're learning.

I recommend watching the Stanford iOS lectures for free on iTunes U. Although you can't follow along with code, it is still very valuable information.

Boot up Linux native or in a VM and learn Swift. it's an open source language now. So, while you won't be learning the OS X / iOS frameworks, you'll at least be learning the language, and at no additional cost.

@emes001 I have a hackintosh just for building iOS and I've published to the appstore