It's coming, the SDK is really really coming. Thank the lord. Apple has sent out invitations to an event titled "iPhone Software Road Map." That may or may not mean they're actually releasing the SDK, but it doesn't sound like we'll be getting a slew of new apps next week.
Yes, it technically is late for the February release, but it's a relief to not be so in the dark anymore. Also interesting:
Apple also said to expect details on "some exciting new enterprise features," which at first blush sounds to me like a method of getting the iPhone to work more closely with corporate e-mail software - CNET
Hello Exchange support?