Late in September, HORI revealed a pair of Mario Kart steering wheels for Switch. They had the mini-version for kids seen above, and a standard-sized version as well.
Since that reveal, Amazon had added a listing for the mini-version here in the states Unfortunately, that listing seems to have disappeared. When it was live, it showed the mini wheel as launching on Nov. 12th, 2019 here in the states. A UK listing is still available, and it states launch is coming on Jan. 2nd, 2020.
We've done some searching, and we can't find any listings for the standard-sized wheel on Amazon. If one version is heading outside of Japan, it's likely the other will as well. We'll just have to wait for the listing to go live to confirm it.
Thanks to Kolma for the heads up!