TUAW has a small article mentioning at additional leakage and rumours hinting at a possible iPhone Nano. As I wrote just some days ago, I doubt this due to the fact that Steve won’t be at MacWorld Expo. There’s something I’d not thought about though. Maybe the rumours regarding Steve’s pancreatic cancer really are closer to the truth than we fear. So my take is, that if there’ll actually be an iPhone Nano, it could be considered as a solid point hinting at a worsened situation regarding Steve Jobs health.
A new Mac Mini, a new iMac, sure, that could be a Phillnote just as well – but the iPhone, Steve’s Wunderkind?

So, there’re new rumours regarding an alleged iPhone Nano. This time there’s even a picture illustrating the new device. I think that this is once again fake. For one, Apple just axed Steve’s speech at this MacWorld. If there really was an iPhone Nano, wouldn’t Steve Jobs want to disclose it to the public himself, instead of letting Phil Schiller do it?

Another doubt comes with the sole idea of a minimized version of the iPhone. A large deal of the iPhone experience comes from the App Store. These applications have been written for the specific display resolution of the current iPhone / iPod Touch hardware. A new device with a smaller screen wouldn’t be able to sufficiently run these applications. I highly doubt that Apple would want a differentiated device landscape, where every developer has to include countless special cases in his code to account for all the quirks of the different devices available (much like with web development). 

So, given that there’s not Steve Jobs at MacWorld, and that an iPhone Nano presumably wouldn’t be able to run App Store applications, I highly doubt the existence of an iPhone Nano. I hope I am wrong though, as a cheap iPhone would expand the App Store audience even further.