I got the same message. I ordered it back in mid Aug. it was out of stock at that time and backordered. I received the following message in mid Nov. I did send an inquiry in Oct. to them just trying to fine out WHEN I might expect it...birthday 11/07 or Christmas 12/25? short answer was they could not tell me. I sent another inquiry beginning of Nov. and I got a curt reply...I decided at that time I will not spend any more of my money with them (after of course I get my Sig) a week later I got the message below.
the following item can no longer be purchased from Tower Hobbies, therefore it has been removed from your Wish List: Sig Senior Sport ARF
I am done with Tower and except for receivers (Spektrum) I am done with Horizon. I will shop elsewhere.