Jesse from Saris said in another forum that what they have now is not ANT+ compatible. At the time they were developing the 2.4, the ANT+ standard was not fully defined yet and they really couldn't wait any longer so pushed ahead with their own standard. Now that ANT+ is defined, they can't alienate the existing users of their 2.4 wireless hubs and receivers by just changing over to ANT+ henceforth from some date. If they were to offer something ANT+ compatible, they would have to offer new hubs that transmit both their old standard and ANT+ (i.e., two bursts of information versus one now) and they may not be interested in that for a variety of reasons.