The release date for Diablo 3’s multiplayer beta is set for September 11th whereas the full version of the game will be released on December 24th.

The system requirements are as follows:

PC:
Operating System: Windows XP/ Vista
Processor: 1.4GHz or higher CPU.
RAM: 1Gb or more.
Video: 128Mb video card Dx9
Hard Drive Space: 4-8GB

Mac:
Operating System: MacOS X 10.3 (Panther) or better.
Processor:1.6GHz or higher.
RAM: 1Gb or higher, DDR RAM recommended.
Video: 128mb ATI or NVIDIA video card
Hard Drive Space: 4-8 GB