This appears legit:
http://www.shacknews.com/onearticle.x/47564

Neogaf board commentary:
http://www.neogaf.com/forum/showthre...=165663&page=2

I imagine Pulse is in line to take advantage of this

Supposedly this only will affect new software that is intended to use 333MHz, as opposed to the custom firmware approach that can allow older games to use the additional power.