I'm a twenty year traveller veteran - I cut my teeth on classic Traveller, played MegaTraveller so much I probably could have won the rebellion single-handedly ;-) - and enjoyed wandering around the ruins of the Third Imperium, in Traveller : The New Era.
...Let me say straight out that this is a *great* addition to that legacy. Loren Wiseman has done a fantastic job of presenting a background rich in detail that will be accessible to newbies and ancient grognards alike. Set in an "alternate universe" in 1120, where the Imperium never fell, the supplement lovingly brings the feel of classic traveller to the GURPS system.
The book is packed with library data, essays on the Imperium and its worlds, character templates, weapons, equipment - and the second edition even includes a modular starship design system to ease the pain associated with the enormous detail in GURPS vehicles.
So without further ado - I bequeath this supplement ...5 stars. Its well written, beautifully presented and just a joy to own. If you are inquistive about Traveller this is a great book to start with. If you are vaguely serious about Traveller this is a purhase that you just can't do without.