Leaked 13 January 2015, this is the most recent public Longhorn leak. Although similar to neighbouring builds, it show some minor changes. Before this time only a WinPE build with the same version number was publicly available lacking the install.wim which made installing impossible.
In contrast to build 4084, WinFS is present again. Even though the WinFS services are actually installed there is no way of starting them. You will either get “Error 107:5: The dependency service does not exist or has been marked for deletion” or “Error 1067: The process terminated unexpectedly”. Searching will result in a crash of explorer.exe.