It was on this day 30 years ago that the X Window System was first announced. Back on 19 June 1984, Robert Scheifler announced a window system for the VS100 that was based upon the W system at the time. The initial X performance on a VS100 was about twice as fast, the code was in development for a few weeks and already showing signs of stability, and developers at MIT were startiing to build applications to run on X.