Apple has confirmed that if you've bought one of their Core2 Duo-based products, you do indeed have 802.11n capability in your hardware. If you want to get those transfer speeds in your gear, though, you're going to have to pay an additional $1.99 for the software that'll make it possible.

"The software that enables the 802.11n hardware will be available from Apple for $1.99. The company said that the price was due to a set of financial guidelines known as Generally Accepted Accounting Principles."