VR-Zone has obtained some information concerning Intel’s next major CPU upgrade for mobile CPUs, due out in the first quarter of 2008.
They are going to be 45nm CPUs, dual-core, and have 3MB, 4MB, or 6MB of L2 Cache. Penryn (the code name for the next major upgrade) will introduce SSE4 (Wikipedia article). They will also have an 800MHz Front Side Bus.
In the area of Standard Voltage (i.e. not Low Voltage or Ultra Low Voltage), the 2.1GHz and 2.4GHz versions will have 3MB L2 Cache, and these will probably end up in high-end ultraportables (there are 2.5GHz and 2.6GHz CPUs listed with 6MB L2 Cache, but it’s doubtful they will end up in the lightweight ultraportables).