Now, it could just be a brilliant joke, but we checked and it wasn't April Fools' Day.
So, it looks like it could be genuine.
There are several theories about what it may or may not do, which include:
* A netbook shell especially for the iphone. It will use the iPhone's processing power to allow larger screen surfing, working, syncing etc.
* A fully featured atom-based netbook, with the usual spec, harnessing the iPhone's multi-touch facility to cut costs. Would also allow the iPhone to be charged and sync'd etc.
* A big fat lie that's not really a netbook.
Bearing in mind the anticipation of an official apple mac netbook (aka the Macbook Nano) to be announced Tuesday or Wednesday of this week, this might just be a hoax. It could however be brilliant!
Stay tuned for more information.

Apple would never authorize this! Rumor!