Palm has released a mobile companion which runs Linux. Its more like a sub-notebook which is light weight and designed to do email. Palm prefers to call it a mobile companion cause they wanted something that would work seamless with their smart phones. When people use smart phones, they often find the tiny screen of the smart phone a limiting factor and Palm hopes to fill the gap with this product.
Palm recently announced that their next smart phone will be Linux based. Expected to be released the year end and I am eagerly looking forward to that!