There really isn't any important information about this build other than that it still uses the older wallpaper as found in build 3683.
This build has been leaked on BetaArchive as an x86 Professional compile. This is the first leaked build to feature a new taskbar that really functione... Read more →
Longhorn build 3718 was leaked as an x86 Professional compile on April 30, 2004.
The build features a Desktop Composition Engine, much more workable than the... Read more →
Supposedly, one of the last builds compiled in the 3000-range. The build tag suggests this build was privately compiled by developer Thomas J.
Build 4002 retains the desktop composition engine and effects present in the widely-distributed 3718 build, all easily turned on in the Display control panel. I... Read more →
This build was used at the Desktop Composition Demonstration booth at the third day of WinHEC 2003((... Read more →
A system with this build was demoed at PDC 2003, showcasing the power of the Desktop Composition Engine. ((... Read more →
Second known 4030 compile, built three days after the first known 4030 build from Lab06.
This build leaked at 22 August 2007 and was the first leaked image to use a system in which the complete setup is contained inside the install.wim file. This... Read more →
This build's setup introduces a clock timer and the well known step indicators (1,2,3) that are still present in Windows setup today. The build itself showcases... Read more →
One screenshot of this particular build was shown at PDC 2003 during the Avalon Graphics and Media (Part 2): Using Graphics, Animation and Composition in Y... Read more →
This build's tag can be found in a BAML file for the desktop Aurora effect in build 4066 and later. Apart from a build tag nothing else is known about this b... Read more →
xBetas captured this build at PDC 2003. This build is one of the many known compiles from the lab06_demo branch. This build has the '3D view' and 'MIL view' ... Read more →
This build had some screen time during Jim Allchin's keynote at PDC 2003. Alan Vermeulen from Amazon.com demonstrated a WinFX powered Amazon application combin... Read more →
Screenshots of this build were included in a patent filing describing a multiple-mode window system. The multiple-mode window system basically is the e... Read more →
This build was shown at PDC 2003 during Bill Gates' keynote by Hillel Cooperman, program manager of the MSx unit at Microsoft. This build contains a lot of feat... Read more →
According to Paul Thurrot this is the build number of the build shown in conjunction with 4067 at Jim Allchin's key... Read more →
A single screenshot of this build was leaked as a Christmas gift at AeroXP. The screenshot shows us a Movie Maker 3 prototype which is much the same... Read more →