All of the beta releases of the iPhone 2.1 firmware have included versions of their Push Notification service, due to release in September. However, beta 4 of the firmware has now removed it, with a note that it is “for futher development”.

We’re not sure if it’s still going to make it out by September, but it certainly doesn’t look good. I hope we see it soon, because it promises to make a lot of applications much more useful.

Related posts:

• Background push notification coming with iPhone 2.1?
• iPhone 2.1 firmware released!
• Big Tuesday coming: iTunes 8 and iPhone 2.1?
• 2.0 Firmware for iPhone coming on June 27th?
• Why would turn-by-turn navigation need updated firmware?

Tags:2.1,iphone,push notification