SDC redid the tree at the wrong time. The technology they rebuilt it with was kinda old then and wasn't all that impressive, and just a few years later it we were already calling for them to re-do it again. Didn't help that they slashed the budget for it at the last minute, or so the rumors at the time said.
It's just completely outclassed now, and the Christmas competition is fierce, so I'm sure it is on the schedule somewhere - maybe even next year...