Well, if Mac fan site World of Apple is on the button, we'll be getting the new goods on 24 March. They've had an inside tip saying Cupertino is readying a hardware event on that date. They've got a strong record in this department and it fits in with previous web babble about Apple's spring time plans.
24 March is a Tuesday, traditionally Apple's favoured day for unleashing products. We've got a call in with our man at Apple, so stay tuned for more details.