Windows Longhorn: Difference between revisions

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Revision as of 12:39, 15 October 2011

Windows Longhorn
Windows Longhorn Logo.png
Microsoft Windows codename Longhorn
Codename
Preliminary name
Longhorn
Kernel version NT 6.0
CPU architecture x86, x64, IA-64
Release date Unreleased
Support end None
Preceded by Windows XP
Succeeded by Windows Vista


Longhorn Architecture, as presented at PDC 2003

"Longhorn" was the codename for the planned successor of Windows XP. The project was cancelled and replaced with a new project with a similar codename - Longhorn Omega-13, that was renamed to Vista that became the real successor of XP. Early Vista builds often were referred to as just Longhorn most of the time and those two projects often were mistaken.

One of the biggest differences to Windows XP was that applications for Longhorn were supposed to be developed in managed languages, mainly C#, and that the "traditional" Win32 API should be replaced with managed .NET libraries in many places. During Longhorn development, many parts of the OS were rewritten in .NET 1.2 (can be seen as a prototype of .NET 2.0), causing bugs and memory leaks, especially in Windows Explorer.

Logos

During the development, the design team created several different logos. The old XP-style flag also is used in many places. Early builds with the Plex theme used a solid white version of the Windows flag, which was never seen before in Windows development.

Concepts, presentations, demos and prototypes

Builds

  • No information available
  • Existence doubtful
  • Information or pictures available
  • Leaked or released


Milestone 1 / 2 - unconfirmed

NOTE: Many sources claim that M1 and M2 were only planning phases of Longhorn; the first confirmed build is M3 3663.

Milestone 3

Milestone 4

Milestone 5

Milestone 6

Milestone 7

Development reset

See Windows Vista

See also

External links