If somehow you've become concerned that another iPhone might not be on the way to market, you can now rest easy. Our ingenious tipsters have discovered yet another fascinating factoid deep within the Frameworks of the iPhone OS 3.2 SDK, namely: the codename of the next iPhone. Buried way inside the platform simulator lies a set of folders dedicated to specific models of iPhone OS-ready devices, including the iPhone 3GS, second generation iPod touch, something called the "K48" (yep, the codename we were told was the internal name for the iPad), and... the "N89." Sure, it sounds like a Nokia phone just waiting to happen, but this is -- according to our extremely knowledgeable and trusted sources -- likely the codename of the next iPhone (previous versions were called the M68, N82, and N88). We can't take too much away from this beyond the fact that the model exists, though we're certain that with a little more digging, some detail is sure to rear its head (attention hive-mind). Interestingly, Apple's just released firmware (3.1.3) also includes another new model, the "N80," which we're told will most likely be the next version of the iPod touch. We're going to keep researching here, so stay tuned for more.