Engadget points to comments by technology reporter Walt Mossberg as evidence that the new iPhone is indeed imminent. Mossberg posted a new review for the Palm Pre in which he acknowledges that Apple is poised to announce a new iPhone at WWDC. In fact, he's very specific about what he expects next week:
Apple already has announced its adding MMS, universal search, and copy and paste. And, although Apple hasnt announced any new hardware features, I expect to see an iPhone with up to 32 gigabytes of memory, video recording, a higher-resolution camera, a compass, and greater operating speed.
While these comments from anyone else would be dismissed as idle speculation, Mossberg is a long established technology reporter who either seems to believe all the circulating iPhone rumors or knows it for certain. Regardless, we'll all find out next week at WWDC.