When Twitter released its new guidelines last week, it quickly became clear that third-party clients would be hit hardest by the company’s latest rules. However, it seems third-party developers aren’t quite as concerned as the rest of us. Tapbots quickly confirmed that Tweebot development wouldn’t change, and now Iconfactory has confirmed that it will continue development on an “all-new” Twitterrific as planned — unfazed by Twitter’s new rules.

With the launch of the Mac App Store set to occur in mere months and with Apple already encouraging developers to prepare to submit applications to Cupertino in November, it was only a matter of time before the App Store for Mac guidelines leaked out in full thanks to some anonymous NDA-breaking developer.

It’s a long list, which you can see in total after the jump, but there’s a few standout restrictions which are sure to raise some eyebrows. ReadWriteWeb has an excellent overview of the more notable ones. We’re particularly puzzled by Apple’s seeming aversion to RSS readers on the App Store, as well as their specific mention of a policy ban against all Russian Roulette simulators.