Windows Server 2003 build 3663

Is known to exist for x86 and ia64, and for several different languages (en-US, de-DE, ja-JP), but only en-US ia64 and de-DE x86 have been leaked. This build is known for being one of the first builds used to create the pre-reset kernel of Windows Longhorn.

Screenshots exist for:
 * Datacenter Server en-US x86fre
 * Enterprise Server en-US x86fre
 * Enterprise Server en-US x86chk
 * Enterprise Server de-DE x86fre
 * Enterprise Server ja-JP x86fre
 * Standard Server en-US x86fre
 * Standard Server de-DE x86fre
 * Standard Server ja-JP x86fre
 * Web Server en-US x86fre
 * Web Server de-DE x86fre