At the end of the year, the http://Monarchie.lu site is getting a new look and offers you a brand new modern user experience, clear and optimized for your smartphones and tablets. A multilingual version will also be launched in 2021.
It's regrettable that some information was removed, but it's a pleasant surprise to see the expansion of content, particularly in regards to the historical framework and organization of the monarchy and household.
Much better than the "updates" of many other official websites (the British for instance) which largely removed content or made it more difficult to find.
It seems a similar style to that personal website of MT's, which has now btw been taken down and redirects to the new Cour website. It is much better than the old one and I suspect over time more info will be added. They say they are working on a different language versions as well which would be good.