If you are a registered iPhone application developer, go ahead and download the iPhone OS 3.0. beta 2. Apple early today announced the availability of the beta software that brings some more enhancement features. 

Push notification and purchasing within an app are said to be part of this beta 2 release and hopefully also include fixes for instabilities of the beta version 1. 

MMS and tethering are supported in this beta release, however, Apple is understood to have told not to use the features, strange. 

There apparently is also a change in the arrangement of the icons to accommodate the new Voice-Memo application.

Download and test the features and let us know how it goes.