CWmike writes to tell us that Seth Weintraub has been hearing some interesting rumors surrounding the next iteration of Apple's MacBook line. "I have been hearing some interesting things about Apple's upcoming line of portable computers. The talk amongst insiders on the new MacBooks is kind of scattered but here's a summation of what I've heard: 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 isn't multi-touch; the body is manufactured out of one piece of aluminum. Eco-friendly, yet sturdy. Manufacturing process is completely different; the release date will be in the last weeks of September."