Yes, good idea to mention that--though I think it might be even nicer to put that up at the top somehow? The most important things for developers to know are "what this release requires of them", both that they move away from `-login_password`/`--live` (soft requirement) and that they use Xcode 5.1 (hard requirement).

We should also mention that they can still use iOS 5.1 (see [the README](https://github.com/inkling/Subliminal#requirements)), but that this will be the last release to support doing so. (When I tag 1.1 I'll update that part of the README btw.)