iPhone SDK Delayed 1-3 Weeks?

In a brief blog post, BusinessWeek writer Arik Hesseldahl reports that the iPhone SDK may be delayed by 1-3 weeks. No reasons for the delay are known, and Apple's plans with respect to the announced late February timeframe remain murky:

However Im also hearing that the situation is fluid, and a lot of last-minute decisions are close to being made about what precisely will or will not be disclosed next week, if anything. There are, apparently, a lot of moving parts to something this complex.

Of note, Hesseldahl contributed to an October 2007 BusinessWeek report published one day before Steve Jobs made the official announcement regarding Apple's plans to release an SDK.