Anandtech got their hands on Intel’s new Yonah CPUs, and they’ve published Intel Yonah Performance Preview – Part I. Here’s a brief explanation of Yonah, from the article:
As the successor to the current Pentium M (Dothan) and the predecessor to next year’s Conroe, Merom and Woodcrest cores, Yonah is a very important chip. As a mobile processor Yonah will bring dual core to thin and light notebooks, basically anywhere you’d find a Pentium M, you’ll now be able to find two Pentium Ms. The implications for mobile performance are huge, as multitasking on notebooks has rarely been all that great of an experience.