Yes, I was there a couple of weeks ago and construction has started. All groundwork seems to be complete and several pieces of track were in place. Did take a couple of photos probably nothing worth uploading. May do so on my next days off though. It certainly looks on schedule for it's early December opening.
Edit: Sorry www worker, somehow I completely missed your post at the time. I finally got there a couple of weeks ago. The giant slide looks good and was just receiving it's final touches,