Apple and other companies are investing in new technology called Wi-Fi Direct which will allow you to connect multiple devices via a wireless directly peer-to-peer connection.
What all of this means? If you got more than 2 devices connected to the same wifi you will be able to transfer data, applications or media files with a speed significantly higher than that of Bluetooth.
Seems that this technology will be out in the beginning of 2010 and could be adopted by Apple for the iPhone, and also for their computers by replacing the the connection of the keyboard and mouse via bluetooth with the new technology.
[via AppleInsider ]