The Interwebz

The original macbook (white) has been upgraded with the new graphics card, processor, and ram. The only difference is the look, and the harddrive.
The new price is $999 while the New aluminum unibody is $1,299

"in other words, the extra $300 you have to spend to get a unibody model gets you a nicer-looking laptop, slight bump in HDD space, faster RAM, a proprietary display port and not much else." - Gizmodo