iPhone SDK Announced

I am a little concerned about what was said in the announcement:

"Nokia, for example, is not allowing any applications to be loaded onto some of their newest phones unless they have a digital signature that can be traced back to a known developer. While this makes such a phone less than 'totally open,' we believe it is a step in the right direction."

Does this mean Apple is going to expand on what Nokia is doing with the digital signatures? If so, does this then mean Apple will have a more strict policy than Nokia? I really hope the iPhone SDK will be open to anyone and won't be much of a hassle to be able to publish software.