I try to stear clear of the many unconfirmed or uncited reports that come through Digitimes but this is one that you might want to keep an eye on. Apparently, Intel will be introducing updates to the Z-series (Silverthorne) CPUs in 2009. The CPUs will have higher clocks and there will be a new chipset say Digitimes. One assumes that the manufacturing process on the CPUs is getting better and higher quality (overclockable) parts are now coming off the production line. Digitimes mentions two chipsets in its brief report. The UP15W and the UL11L. The UP15W variant is new and the UL11L is the low power variant with the video decoding hardware removed (apparently found in the Aigo MID but I haven’t confirmed this yet.)

Current SCH (Poulsbo) chipset variants. (From this Intel PDF document.)