For decades, Microsoft has been compiling builds of Windows with a continuous count for version control and as of today, the version number has crossed 10,000, according to sources who are close to Microsoft.
This does not necessarily mean that 10,000 builds of Windows have been compiled as the company will jump version numbers around major releases but this does mean that new builds of Windows 10 going forward, will have 10XXX version numbers.
This is a big milestone ahead of the company's press event, which takes place tomorrow at its campus in Redmond, Washington, that will be packed with new features coming to the Windows platform. Microsoft is expected to release a new build for the Windows Insider program that will incorporate updates to the OS - but don't expect all features that are shown off tomorrow to make their way into the next build that is publicly released.
The rolling over across the 10,000 count is a bit symbolic too as Windows 10 is an ambitious release for Microsoft, impacting not only the desktop, but phones, tablets, and even Xbox too.
Some of you may be familiar with buildfeed.net that keeps an unofficial track of all the builds compiled and you will notice that the last compilation was 9925, so this is a jump of 75 builds. Because of this, it would not surprise us to see this build or one close to it being demo'ed tomorrow at the press event.