After being delayed beyond the "late February" release date Apple provided at Macworld 2008, the official iPhone SDK was released today at Apple's iPhone Software Roadmap event in Cupertino, CA. The event also included information on the release of new iPhone Firmware, version 2.0, coming in June.

The SDK is now available for download via Apple's website. iPhone applications developed with the SDK will be built in Xcode. Xcode is the same development environment under which standard OS X applications are developed. This makes earlier rumors that the iPhone SDK would be for Mac OS X users only

Though we're just a few hours away from the scheduled Apple software event in Cupertino, where the iPhone SDK release is expected to be announced, a few last minute rumors are making their way along the grapevine. The latest purported leak, from an anonymous source, suggests that the iPhone development environment may be restricted to those running Mac OS X.

If we ever go 30 days without publishing a new "source" of information on the coming of the 3G iPhone, you'll know the 3G iPhone has been released. That said, despite the large volume of rumors that continue to surface on the topic, rarely do they warrant mention. The latest, out of Citigroup, just might.

According to Citigroup analyst Richard Gardner, several sources [have] confirmed the introduction of a new 3G iPhone" in the second quarter of this year. Gardner offered up this information in a research note published following recent meetings with Taiwanese electronics companies. One can reasonably assume then, that

Despite earlier reports that potential talks between Apple and China Mobile about bringing the iPhone to China Mobile's 350 million subscribers had fallen through, a report out of Reuters today indicates that the two parties may soon be sitting down together.