Most rumors and predictions are quite correct. There are the new products announced by Steve Jobs at the Macworld 2008 keynote:
1. MacBook Air
A 13 inch (13.3 inch), the thinnest notebook ever, about 2cm thick, without sacrificed the performance.
I would like to see Apple release a MacBook mini, a 10 inch or smaller than that, but cheaper in price, like the Asus eeePC. This most likely will not happen as the direction for Apple now is, they make smaller device, but bigger memory and storage size.
2. iPod Touch. More application for iPod Touch, 5 new application, Mail, Maps, Stocks, Notes, and Weather.
3. iTunes movie rental. You can get movie by all major studio like Touchstone, Miramax, MGM, New Line Cinema, Fox, Warner, Disney (sure!), Paramount, Universal and Sony.
4. Apple TV take 2. The new Apple TV doesn't connect to the computer, but build in with a new software. You can rent movies with the new Apple TV.
Refer to my Pre-Macworld 2008 post, which I just summarize on what others people predicted. There is no 3G iPhone, Mac software is on new Microsoft Office, and nothing much. Slim macbook, iTunes video rental, new Apple TV is what other people predicted.
If you are lazy to watch the 90 minutes keynote, mahalo has a summarize version here.