UPDATE: Apple's online stores are back online.

Apple has updated web site, informing visitors that its MacBook line-up has been updated with newer models offering slight performance, RAM and storage improvements.

The new MacBook line up is now as follows:

MacBook White 2.0GHz
- 1GB DDR2 RAM,
- 80GB,
- Combo Drive,
- $1099

MacBook White 2.16GHz
- 1GB DDR2 RAM,
- 120GB,
- SuperDrive,
- $1299

MacBook Black 2.16GHz
- 1GB DDR2 RAM,
- 160GB,
- SuperDrive,
- $1499

The line-up is keeping similar features to its predecessor: Intel GMA 950 graphics, Bluetooth and Wifi wireless connectivity, Mag-Safe power connector, iSight, Front Row and a glossy 13.3 inch display. It ships with Mac OS X Tiger 10.4.9, iWork and iLife.

Additionally, purchasers can now chose the 200GB of storage option for their MacBook.

The new MacBook line-up is available through Apple's online store with immediate shipping.