personally I believe that there is going to be a new iphone model based on the touch technology, because I believe that the touch is the test environment for the iphone. You can tell that there are major hardware differences between these products. Also remember that 12 months after Apple release the 1st phone that they only added 3G to the existing model(no changes really, remember that they could have planned for this in the start,1st model, to "bolt on" 3G after release), there would be no way to release a completely new hardware modified phone within this period. It just would not be possible with all the design, development, testing etc involved. This period when we saw the new touch model would be more feasible. This would explain why these headphones would not work. The current iphone in Apples mind is an old technology of about 3-5 years(taking into account pre-release design and dev.)
So be ready for a new model. my gut feeling. and don't expect those headphone ever to work with the 1st generation iPhone both 2G&3G, as I class these as the same model.