Windows Server "Longhorn" is the codename for the next server operating system from Microsoft. It will be the successor to Windows Server 2003, and will be called Windows Server 2007 or 2008, depending on its release date[1] — it is known that Microsoft intends to keep the year based naming scheme of its server products. According to Bob Muglia, senior vice president of servers and tools at Microsoft, the current release timeframe for Server "Longhorn" is the second half of 2007[2].