There's a brand new set of no less than seven CPUs out on the market announced by Intel today, each of them with a slight modification over the last comparable version of them, with both Core i5 and Celeron units up for sale. Each of these units has been announced extremely silently for one reason or another, most likely because they do not offer major advances over the last wave of comparable cores. Other than the P at the end of the names for two of the three Core i5 units possible meaning a modification to the GPU has been made, not one whole heck of a lot is known about the innards of these products.
What is known is the prices, which units these CPUs are replacing, and the frequency, core number and thread number, and L3 Cache of each. You'll find your current Core i5250 K, 2400 and 2320 being replaced by 2550K, 2450P, and 2380P respectively. They each remain quad-core, frequency 3.4, 3.2, and 3.1 down the list, and prices sit at $225, $195, and $177 as the power lessens. Prices have been reduced slightly in what we, again, expect is due to the GPU core being modified.
The Celeron models are similar in their changes, with the B710 being replaced with the B720, the 857 replaced by the 867, and prices ranging from $70 all the way up to $134. These units will use their low-voltage ways to sit in lower power machines and will be bringing you up to speed in the sub-superpower notebook category across the board. You can check out the full price list for everything in the Intel world in this pdf file straight from Intel, and it's VR-Zone that says the point above on P might mean a GPU-less SoC, they too our source for this information.