I could be wrong, but I'm thinking Apple has got to do a 32gb iPhone. There is already a 16gb version as of February. There's a 32gb iPod touch. I'm thinking they wanted to reposition the iPhone as cheaper and they'll probably charge $399 for the 32gb version. Releasing that now spoils their cheaper message. That's all the evidence I have but it may stop me from buying a 16gb iPhone in July.
Update on July 8. Well, July 11 is coming soon and I still don't have any good evidence for a 32gb iPhone in September... that's going to make it tough to resist buying a 16gb iPhone Friday.
Update on July 10. No word on another iPhone 32gb. However, lots of people believe there will be one and that it is likely to be released in September when new iPods are announced. The other possible release date for such a phone is at the MacWorld Expo in January. A long, long time from now.
There have been rumors all along of a higher-end iPhone. All the early adopters will want one if they can afford it including me. Will it have a better camera? The lack of an upgrade to the camera in the 3G iPhone is one of the reasons I think there is a higher end version of the iPhone in the works.
One last thought. Apple got in big trouble when they dropped the price of the iPhone from $599 to $399 in September. They would get into big trouble if they release a better iPhone in September. But if we can just bring our iPhone 3G in and trade for a small restocking fee it would be OK.