Maybe the best front-end feature from Snow Leopard yet: HFS+ drivers will let you access your Mac’s files from Windows in Boot Camp, making running multiple OSes on one machine more seamless.
https://gizmodo.com/how-to-install-windows-7-on-your-mac-using-boot-camp-5132325
One other bit Ars rounds up: The Grand Central APIs—Apple’s built-in multi-core mojo—are finalized, meaning that the OS is likely feature-complete as well. [MacRumors via Ars]
https://gizmodo.com/giz-explains-mac-os-10-6-snow-leopard-parallel-process-5017615