Apple is said to be working on a 6-inch device to sit somewhere between the current iPhone and iPad ranges.
The mystery 6-incher could be the iPad 3, which has been speculated to launch later this year, or the iPhone 6, dwarfing the current iPhone 4's 3.5-inch display.
Honey, I shrunk the iPad
A blown-up iPod touch would fill a gap in Apple's portable device range, allowing apps and emails to be enjoyed on a bigger screen without necessarily resulting in the iPad's premium price tag.
And, without the 3G connection, users wouldn't have the option to look like an idiot holding an enormous phone up to their ears to take calls (unless they're determined to by using VoIP).