Hey,
i choosed the new Luminaire Tree, but if i want to decorate it, i can only see my old tree to decorate. What can i do that the new tree shows up?

When hovering over your avatar here, I do see that you used the new tree?
Yes, its the same if i hover over my avatar. But at the decorate menue, only my old tree shows up to decorate, not the new one : /

Ah, I just looked around, it seems that others have the same problem, but it can be fixed. See post here in the bugs forum.