New SSE instructions set for the Conroe

Intel's Internal notes would support the idea that the future desktop processor to be released by Santa Clara Giant, Conroe, will feature a new set of instructions (currently SSE3) in order to boost some specific processes (a bit like Altivec).
This new set would particularly focus on enhancing video processing.
We should get more information about this subject on March 7th when the Conroe will officially be announced.
Maybe this specific set has been requested by Apple to add a bit of Velocity Engine-like strength into Intel processors? ;)