Centrino will have 802.11n.

• Intel is upgrading the wireless component inside its Centrino Duo mobile technology found in some PCs and other Intel-based laptops. Intel unveiled on Tuesday its Next-Gen Wireless N network connection.
• The component is based on the draft 802.11n Wi-Fi specification, which is designed to replace the 802.11a, 802.11b and 802.11g Wi-Fi standards for local area networking.
• While not an official industry standard, Intel has been a staunch supporter of 802.11n, which uses MIMO (multiple-input multiple-output) technology that can reach data rate speeds of 540 Megabits per second from distances of more than 100 feet.
• Integrating wireless-N technology into notebook computers based on Centrino Duo with the Intel Core 2 Duo processor delivers the speed, coverage and multi-tasking abilities needed for consumers to enjoy their home networking and digital entertainment.

Source : http://www.informationweek.com