win2000,XP's 开发和发布的时间

数据来源：Directions on Microsoft

Windows 2000 开发和发布的时间 (总共44个月)

• Windows 2000 Announced    -Nov.1996
• Windows 2000 Beta1     -Sept.1997  (15 Months)
• Windows 2000 Beta2    -Aug.1998  (11 Months)
• Windows 2000 RTM      -Dec.1999  (16 Months)
• Windows 2000 General Availability  -Feb.2000  (2 Months)

Total : 44 Months.


Windows XP开发和发布的时间 (总共22个月)

• Windows XP Announcement    -Dec.1999
• Windows XP Beta1      -Oct. 2000  (10 Months)
• Windows XP Beta2      -Mar. 2001  (5 Months)
• Windows XP RC1      -July. 2001  (4 Months)
• Windows XP RTM      -Aug. 2001  (2 Months)

Total: 22 Months.