So the news isn't that iPhone 2.1 Beta 4 has been seeded to developers, no that's expected. With a (hopeful) September release, iPhone 2.1 should be receiving its finishing touches. What the news is, is that the much ballyhooed feature of push notification is missing. As in gone. Not there. Removed. iPhone 2.1 Beta 4 removes the push notification feature from the test version.
Should we begin to worry? Push notification has been present in iPhone 2.1 since the very first beta. Apple says its been removed for further internal development. Obviously, the removal of the push notification feature would prevent developers from understanding the animal that is push. But then again, we at TiPb would rather prefer a delayed polished product than a rushed buggy one (ahem..MobileMe).