Just hours ago AMD announced the availability of three new AMD Phenom X3 triple-core processors that feature the latest B3 stepping. AMD first announced triple-core processors back in September 2007, but only just recently launched the AMD Phenom X3 8000 series last month. AMD has finally brought the 'B3' stepping to the triple-cores and has announced three new AMD Phenom X3 triple-core processors that make up the new '50-series'.