I think Job's anti-stylus stance was aimed at primary input, which I'd agree with him on. 95% of the time a finger is accurate enough, and more convenient.
It's pretty clear that if iPad is going to have a life as a Wacom alternative, then a stylus will be needed and Apple is going to have to open up the APIs necessary to make it happen, and I can't imagine any reason they wouldn't. Apple has been slowly opening up the hardware to developers; things were pretty locked down for 2.0, and 3.0 opened things up significantly [Camera, Dock connector]. With the OS 4.0 preview tomorrow, lets hope that they announce some extended Bluetooth and screen APIs to make a more functional stylus a reality.
Yes, maybe you're right. Here's to hoping they will open up to the creative potential of this device. We'll find out what tomorrow brings.