MacRumors.com

According to Digitimes, Intel is poised to launch their Arrandale mobile CPUs in January 2010.

Intel plans to launch four 32nm dual-core Arrandale CPUs (Calpella platform), the Core i5-520M, Core i5-430M, Core i3-350M and Core i3-330M, in the first half of January 2010 for the mainstream notebook segment, according to sources from notebook players.

The Arrandale CPUs are based on the advanced Nehalem architecture first introduced into Macs earlier this year. These new mobile processors are said to come in mainstream as well as low-voltage variants that will make them suitable for both the MacBook Pros as well as ultra-thin notebooks such as the MacBook Air. These new chips are expected to deliver significant performance boosts over the currently shipping Apple notebooks.

Apple last updated the MacBook Pro line in June 2009.