Newbie question. I'm on the fence whether to buy a Macbook now or wait (as so many advise). However, I'm wondering what significant hardware updates to expect with the next round of Macbooks available when Leopard arrives in June. If the hardware changes are not that significant, the better deal might be to buy now and only upgrade OS and software later. I am not into video editing or gaming so the potential video upgrade does not sound that important to me. What other improvements or changes do people expect on the hardware side come June?