According to the
official press release,
Full product details will be disclosed when the product is available for purchase in early calendar 2006. No plans were revealed for additional mobile operators. Palm indicated that a Treo smartphone using Windows Mobile based on other wireless technologies was not anticipated to be released earlier than the second half of 2006.
Any explanation why only Verizon? Wouldn't it make more sense to make the device available to more operators for stronger sales?