Full disclosure: I doubt that I will ever buy into a GURPS Bundle of Holding, largely because I have a ludicrous number of GURPS books in my physical library. And I mean ludicrous. It’s kind of alarming, really.
Anyway, Bundle of Holding is doing both GURPS Traveller and GURPS Traveller Imperial Survey. It is an official ‘alternate history’ of the main Traveller line; basically, somebody blew up a shuttle at the right time and the entire civil war / collapse of interstellar society never actually happened. I seem to recall this bothering some people at the time, but I don’t feel that I’m sufficiently aware of the Traveller universe to be able to have a meaningful opinion on that controversy. Suffice it to say that it’s quite a good – and nicely supported – game line; well worth checking out.
Also, they included GURPS Traveller: Starports, and damn but I miss John M. Ford. He was one of the best of us.