飛小豬

Windows 2008 Server will be manufacturing by the end of this year. 
"Windows Server 2008 is the last 32-bit OS we will make," Laing said, 
according to Laing, who said that the future 64-bit-only version, 
currently called Windows Server 2008 R2, is due out in 2009

Windows Server 2008 is currently in Beta 3. 
Downloads for the public beta have exceeded 100,000 in three weeks
If you wanna try it, download it from Windows Server 2008 Home
URL http://www.microsoft.com/windowsserver2008/default.mspx