I’ve asked the others in the FSElite team and we’re all pretty convinced that this has yet to even be announced by JustSim. I’ve checked their Facebook account and website, and there’s been no mention of Luxembourg. So with that said, JustSim have said that they will release Luxembourg Airport (ELLX) in the next few days.
Only one screenshot was provided, but you can see plenty of work has gone into the markings on the ground and there appears to be some nice dynamic reflection on the terminal building itself.
It’s coming for Prepar3d, X-Plane 10 and 11 in the next “2-3 days”, so will update you on release. No mention of FSX, so maybe they won’t be supporting the older platform?