We reported a short while ago that Intel were planning to release a new range of Core i5 processors with the graphics circuitry stripped from the die. Makes sense really as many enthusiast users have never touched, or have no interest in using that part of the design, opting for discrete graphics instead.
From what we have heard the upcoming 2550k is going to be an overclocking powerhouse, but we obviously can't confirm until we get our hands on one. ARIA have preempted the demand for the new design by taking pre-orders.
Launch date hasn't been set in stone yet, but latest indicators would suggest within the next two weeks.