One thing that isn't clear to me from this thread is whether or not people (like me) who bought the Steam version will have to do anything differently in order to pre-order the expansion. Would appreciate clarification.
As a Fuel Rat, I'm also wondering whether and how refueling limpets are going to work in a gravity well, and whether SRVs will require (or be capable of) refueling? I foresee a lot of CMDRs getting stranded in a gravity well with insufficient fuel to escape, and this could be an amazing expansion of Fuel Rat gameplay... or it could create a "no man's land" where we basically have to tell people "sorry, but if you're on a planet's surface we can't save you". The former would be marvelous, the latter... would be pretty awful.