corellon: I was wondering if it will be possible to get any of the janes aircraft series in the future. Either us navy fighters, atf, usaf or any of the others .
EA is not yet a publisher signed on to GOG. It is difficult to say when or if they will come on board and allow GOG to add EA games to the current catalogue of classics. There have been statements of a new "huge" publisher coming to GOG, possibly EA, Lucas Arts is another contender, but we don't really know who it is. Then even once GOG signs on a new publisher it can take awhile for some games to come on the catalogue and there is not a set schedule of when a game will arrive since it depends on whether or not the publisher has released that specific game and whether or not GOG can get that game working on newer machines.
So ... difficult to say, but should EA come on board you would probably see a lot of happy gamers here :) and a lot of classics including Jane's released. There is a wanted list:
http://www.gog.com/en/wanted/ but it isn't really maintained all that well and GOG is going to create a better version soon*.
There are some current flight sims that are great and on GOG:
Red Baron and
Il-2 Sturmovik are the two I have. The others are
Apache vs Havoc,
Comanche vs Hokum, and
F/A-18E Super Hornet. Check them out on the GOG catalogue.