Much like Intel’s Centrino, AMD is referring to their Turion 64 as a “Mobile Technology” and not just a microprocessor platform. AMD has seen the success of Intel’s Centrino Mobile Technology and is hoping to capitalize on some of that success.
http://anandtech.com/cpuchipsets/showdoc.aspx?i=2374
Basically the same thing as a Mobile Athlon 64, except with cooler 90nm cores.