Apple releases iPhone OS 4.0 beta 3 to developers, focuses on orientation lock and iPod features

Apple released the third beta of its upcoming iPhone OS 4.0 firmware to developers on Tuesday. The new build, specified as build 10M2247, closely follows the release of beta 2 just two weeks ago. Both last year’s iPhone OS 3 and the 3.2 release for iPad went through five beta cycles before being released publicly.

iPhone 4 is expected to be release to the public in June for iPhone and iPod touch users, with an iPad version due for release in the fall.

Shortly after being published on Apple’s developer site, the new update was pulled temporarily to fix an issue believed to be related to an installation problem according to Gizmodo.

The new beta makes it easier to quit apps running in the multitasking drawer by giving each icon a red quit quit button, similar to the Home screen method of uninstalling apps with a touch.

Also new is a widget controller for iPod music playback, and an orientation lock that works similar to the physical switch on iPad. However, since the iPhone’s user interface is oriented toward portrait by default, with apps supporting landscape only optionally, the lock only sets orientation in portrait.

In contrast, the iPad presents no default orientation, making the lock more important and functional in both landscape and portrait directions.

The beta 3 release still does not support push messaging features for remote location, messaging, lock, or secure wipe as Apple prioritizes its beta releases to be relevant to the issues developers face in testing their apps with the new firmware.

Stay tuned for additional details as they come in and if you’ve had a chance to play with the new beta, let us know.