Although Apple's new Leopard operating system was expected to be released in April, industry sources are indicating that the new OS could be pushed back to October to allow Apple time to improve support for Windows Vista. As strange as it may sound that Apple is building its OS to work with Vista, it needs to be remembered that Apple isn't only interested in selling the OS, it wants to sell Macs as well, which it can do by allowing Windows users to move over to Mac hardware. Because Boot Camp is to be integrated into Leopard, this should allow Windows users to easily install XP, but there are some issues with it that will create problems when installing Vista - if Leopard supports only Windows XP, then the chance of the new OS attracting Windows users to buy an Apple computer will decrease, meaning Apple misses out on sales. So Mac fans will have to wait a little longer for the next OSX.