Nope. If you were trying to submit it tomorrow, it'd be rejected though.
Thanks for the clarification. If you work for Github it would be useful if the blog clearly stated it (maybe I just missed it?)
> For an example of a service that won't be accepted after today, check out Campfire. It uses other Ruby gems and contains custom logic to transform the GitHub payload to Campfire messages. Existing hooks will keep working (don't worry 37signals, we Campfire).