Digit-Life has some concrete information regarding Intel's forthcoming changes in the naming system of their processors. This information comes from the Russian departement of Intel.
The key change is the lack of clock speeds in names of Intel's future CPUs. Actually, it will be replaced with a so called processor number.
The official version is that the extension of lines, especially in the desktop sector, and availability of processors based on different architectures and even cores make the situation pretty confusing. One of the examples is 4 modifications of the Pentium 4 CPU clocked at 2.8 GHz:
The difference in their parameters is great, therefore, they might have different performance, price and an area of application. Sometimes it's also used by hardware sellers to play tricks with buyers. That is why from Intel's point of view the current situation makes it necessary to redefine the conception of naming its processors in order to prevent possible mistakes and makes processor names simple and logical from an end-user's standpoint.