As predicted, Apple has quietly upgraded their low-end MacBook with a faster processor and much improved video card. The full specs include:

2.4GHz Intel Core 2 Duo
2GB DDR3 memory
250GB hard drive
8x double-layer SuperDrive
NVIDIA GeForce 320M graphics
Built-in 10-hour battery
Polycarbonate unibody enclosure

Apple Updates White MacBook to 2.4GHz and NVIDIA GeForce 320M