I have heard that Rubin-Royal and Royal Diamond have been sold to a stallion station in Switzerland and will stand at stud in that nation from now on.
I am sorry to see them leave Germany. They were among the jewels in the crown produced by their breeders - Harli Seifert and Gudula Vorwerk - who were iconic breeders/stallion owners in Oldenburg. Both ladies have sadly been forced over the past few years to drastically downsize or close their doors entirely due to the economic downturn (coupled with breeders moving on to other bloodlines).
I wish the boys many years of happy breeding in Switzerland.