Windows 10, build 10014, which includes the Spartan browser, has leaked to the internet. Besides Project Spartan, it is also likely to include other new features that we will try to discover. Visit MDL forums for more details or read more details about Spartan right now HERE. Here are some technical details:
Only the install.wim file was leaked:
install.wim sha1sum 911a448ad926ec98351dab0eb8ef8e0ba06d17cb
At Winaero, we recommend you to not try unofficial builds on real hardware as they could contain unknown mods or malware. If you are going to try the leaked build, it is a good idea to use a Virtual Machine like Virtualbox.