The treehouse has been retired at ground level in order to recoup some prims and make the view for LEA6 a bit better. Since filming in that direction has often been problematic anyway because of the ever-changing builds, this should work better.
Meanwhile there is always newness arriving. Most these days are up in the full sim city build. So if you haven't journeyed up there of late, do a bit of exploring. Who knows what you might find?