I got Traveller5 from Marc Miller today. I have looked through it. It is huge! The rules seem clearer on some points than in other versions. There are lots of help for both experienced traveller players and for new. But new players may get scared since the book is so huge and some rules are quite complex.
The Charted Space that we know is used. I thought the book would have been more generic since I have read about the extended tech-level tables and sophont generation. But I still want to create my own ATU for Traveller5.
One thing that I just had to check was the planet creation rules. Was is like Book-3, T4 and T20 or like Book-6, MT and TNE. It’s on page 433. It is like Book-3, T4 and T20, Hydrographics = 2d-7+atmosphere. But in T5 a concept called Flux is used.