Apple today announced that Mac OS X Leopard will go on sale Friday, October 26 at 6:00 p.m. at Apple’s retail stores and Apple Authorized Resellers, and that Apple’s online store is now accepting pre-orders. Leopard is packed with more than 300 new features and introduces a brand new desktop with Stacks, a new way to easily access files from the Dock; a redesigned Finder that lets users quickly browse and share files between multiple Macs; Quick Look, a new way to instantly see files without opening an application; Spaces, an intuitive new feature used to create groups of applications and instantly switch between them; and Time Machine, an effortless way to automatically back up everything on a Mac. Mac OS X Leopard is priced at US$129 for a single user license. The company also announced that Mac OS X Leopard Server will ship on the same date for $499 for a 10-client edition and $999 for an unlimited-client edition.