Mac OS X Leopard ups the power of 64-bit computing delivered in Tiger. Build and run a new generation of 64-bit applications that address massive amounts of memory. Leopard takes 64-bit computing to the next level, while maintaining full performance and compatibility for your existing 32-bit applications and drivers.
Enhanced 64-bit Support
Leopard delivers 64-bit power in one, universal OS. Now Cocoa and Carbon application frameworks, as well as graphics, scripting, and the rest of the system are all 64-bit. Leopard delivers 64-bit power to both Intel- and PowerPC-based Macs, so you dont have to install separate applications for different machines. Theres only one version of Mac OS X, so you dont need to maintain separate operating systems for different uses.
Bridge the Generation Gap
Now that the entire operating system is 64-bit, you can take full advantage of the Xeon chip in Mac Pro and Xserve. You get more processing power at up to 3.0GHz, without limiting your programs to command-line applications, servers, and computation engines. And in just one great package: Leopard.
All features referenced in the Mac OS X Leopard Sneak Peek are subject to change.