After the Xenon (original one, 90nm CPU, 90nm GPU), Zephyr (HDMI and Cooling), Falcon (65nm CPU, 90nm GPU) and the yet-to-be-released Jasper (65nm CPU, 65nm GPU), two more are on the way, the Opus and the Valhalla. The Opus features a 65nm CPU and 90nm GPU (equal to the Falcon) and, from what i´ve read is merely intended to fit in the original Xenon Xbox 360 cases. So, no more RRoD (i can´t believe that news, it´s like a miracle), because the Opus is meant for refurbished systems only, which makes that every system that returns from repair is going to come out 100% RRod free. The Valhalla is a strange one... It combines the CPU and GPU in one 65nm chip (you heard it right), requires even less cooling than the upcoming Jesper. Rumor (the strange part): released in late 2009 or 2010. 2009 or 2010....so late in the game? If that´s true, this is the chipset should be for the 720 (?), not the 360.