A X3: Reunion Beta has been released: http://forum.egosoft.com/viewtopic.php?p=4012540
The complete X series is on Steam "Flash Sale" with a discount of 75% for the next 3 hours.
Sounds like a very good deal.
Wonder if I can somehow insert my original LGP license into steam...
Beyond that, hopefully X3:TC and AP will be next (though at least X3:TC works just fine under wine )