Registered iPhone developers began playing around with the beta release of iPhone 3.0 late Tuesday, and initial reaction to the enhancements announced earlier in the day are quite favorable, according to a report at AppleInsider. The beta release includes an updated Software Development Kit (SDK) with over 1,000 new Application Programming Interfaces (APIs) including In-App Purchases; Peer-to-Peer connections (tethering); an app interface for accessories; access to the iPod music library;

Apple has just given a preview of iPhone OS 3.0 and it’s a HUGE update! To view the keynote video, you can check out here . Nearly all features that were rumored or requested by iPhone users , they are covered in this next generation mobile OS. As announced by Apple , iPhone 3.0 adds over 100 new features to iPhone: The iPhone OS 3.0 beta release includes an updated Software Development Kit (SDK) with over 1,000 new Application Programming Interfaces (APIs) including In-App Purchases; Peer

In a press event held Tuesday at Apple's Cupertino, Calif.-based headquarters, executives offered a look at some of the more than 1,000 new APIs in the iPhone 3.0 software development kit, which opens new avenues for applications that use streaming audio, and video, maps and games.

The Software Development Kit also appears in a new Version. According to rumors, the new iPhone-Software a Modem function.

Apple has announced plans to preview version 3.0 of its iPhone operating system at a special event on 17 March. The company is also expected to unveil a new software development kit.