There are a lot of rumors coming in about the next Macbook, like this one. Here's another one, but take it with a grain of salt.
The next Macbook is said to include * The new models are thinner than current MacBook and MacBook Pros and slightly more rounded, taking design cues from the MacBook Air. * The trackpad is glass, multi-touch and uses gestures. The screen isnt multi-touch. * The body is manufactured out of one piece of aluminum. Eco-friendly, yet sturdy. Manufacturing process is completely different. * Release Date: Last week(s) of September.
If any of this is true, the next Macbook just may be the "big push" for PC users.