This morning Apple started sending out invitations to an event to be held Thursday, March 6. The topic? The long-awaited iPhone SDK. The invitation read: "Please join us to learn about the iPhone software road map, including the iPhone SDK and some exciting new enterprise features." Finally!

Finally, indeed. Waiting 5 months for details about the SDK has been akin to torture. All will be revealed, soon. At 10 a.m. on Thursday, March 6, Apple will host one of its Town Hall meetings at its Cupertino headquarters to discuss the state of the iPhone. Apple will likely divulge information about the SDK itself, the approval process for applications, and information on how the applications will be distributed. Most people suspect that apps will be made available through iTunes.

The "exciting new enterprise features" also should cause you to raise your eyebrow a bit. Enterprise? Really? Does that mean full enterprise e-mail support? Better security? Or partnerships with mobile enterprise software makers? Only Apple knows at this point, but Over The Air will provide you with all the juicy details after the news conference is over.

One thing to consider. Apple didn't say that the SDK would actually become available next week. It only said "iPhone software road map." Since it already has missed its own self-imposed deadline of getting the SDK out the door by February, what's another week or two before the SDK is really, really ready?