Hopefully it won’t take too long for this to come out in the U.S., and not screwed up in the video dept. like Power Of The Daleks was.
Well, the US DVD has been delayed from Jan 9 to Dec 18 2018. Possibly because BBC America decided to broadcast it at some point. So, you called it I guess.
Still, best not to get that release even if they came out at the same time.