The biggest new feature is the addition of a Thunderbolt port to the laptops. Using Intel's Light Peak tech, these ports can transfer data at a blazing 10Gb/s, which will be great for external hard drives and the like.
In addition, the laptops are all boosted, spec-wise. Here are the base models:
The 13-inch model will cost $1,199 with a 2.3 GHz Dual-Core Intel Core i5 and 320GB hard drive, or $1,499 for a 2.7 GHz Dual-Core Intel Core i5 and 500GB hard drive.
The 15-inch model comes with a 2.0 GHz Quad-Core Intel Core i7, AMD Radeon HD 6490M and 500GB hard drive for $1,799, otherwise pick up a model with 2.2 GHz Quad-Core Intel Core i7, AMD Radeon HD 6750M and 750GB hard drive for $2,199.
The largest of all, the 17-incher has a 2.2 GHz Quad-Core Intel Core i7, AMD Radeon HD 6750M and 750GB hard drive, and costs $2,499.
Head on over to Apple's website to see 'em all for yourself.