Nintendo is shipping Wii systems in Australia with a revised DVD drive that makes them incompatible with all modchips.
Nintendo has thrown a wrench into the modchip industry's plans by releasing an updated revision of their Wii console. Discovered in Australia, the new Wii systems do not support modchips due to changes made to the DVD drive. Specifically, Nintendo has made soldering a modchip into the Wii pointless by altering the controller chip on the optical drive.
Modchip makers do not appear to be daunted by the new drives and are already working on new ways to modify the Wii.