Yes, this is exactly true. I have checked with the Tischer parts guys and they have confirmed that only the X5M wheel is heated if you want the M style wheel (which I love). You can not yet even order the x5m wheel to retrofit it. Only the M sport wheel which is the same but not heated and costs ~$750 from tischer ordered from Germany. The performance wheel is alcantara covered with a flat bottom for $660 from tischer. It may not be as cold since it is alcantara...other wise if you want heat, it is the sport package with the cold weather package.

X