Not that it makes a huge difference to the Deacon Project (other than acting as an awesomeness enhancer), but I received some gentle correction on Apple's approach to push notifications in iPhone OS 4. Thanks to my friend Pauley for digging up the following video!
As it turns out, my surprise toward Apple's apparent step toward openness in allowing push notifications from third-party servers was well-founded. Even in OS 4, iPhone devs will still need to send their push notifications out via Apple's servers. The difference now? They'll be able to generate their own notifications from within the device.
Of course, none of this really has any impact on Deacon. Android still lacks native push support, and the introduction of Deacon still means a new choice in how to deliver push notifications to Android apps.