This is Traveller's 35th year, and Marc has worked for several years on what he calls the Ultimate Edition: Traveller5. It includes so many things that players have asked for, or that have been imperfectly handled previously. In fact, Marc recently said there are now systems and chapters that he didn't know how to design way back then.

But he does now, and they are included. T5 has technology beyond TL 15, clones, robots, computers, artificial intelligence, QREBS (!), alien senses, Flux. It has a whole series of easy-to-use Makers: GunMaker, VehicleMaker, ArmorMaker, RobotMaker, SophontMaker, ThingMaker. It includes mapping of star systems and worlds; there's ever the MOARN caveat: Map Only As Really Necessary, or referees would spend all their time just making maps of worlds and systems. There's a rationalized section on Psionics, and more, much more.