Microsoft is moving at a very quick pace with Windows 10, from new technical previews being pushed at a
semi-regular pace, to also building
Windows 10 for phones at the same time. It goes without saying that all the engineers at Redmond are putting in long hours to bring you technical previews that have already been released, but there is light at the end of the tunnel for the final build.
The next logical question is when will the OS be completed? We are hearing that Microsoft is targeting the month of June at this time, but as with any timeline, this could slip.