Apple has released the 2-meter Apple Thunderbolt cable for US$49 (Part Number UPC or EAN No.: 885909456635).
Thunderbolt technology supports blazing-fast data transfer with two independent channels of 10Gbit/s each.
Use the Apple Thunderbolt cable to connect your Thunderbolt-equipped peripherals to your new iMac or new MacBook Pro.
Apple Thunderbolt cable can also be used for Target Disk Mode between two Macs that support Thunderbolt, or to use a new iMac as a display for a MacBook Pro equipped with Thunderbolt.
More info: Apple Thunderbolt cable