Game Freak, Creatures Inc. and Nintendo have registered new trademarks that we will most likely see used in the future for a new set.
一撃マスター / Ichigeki masutā / Single Strike Master
連撃マスター / Rengeki masutā / Rapid Strike Master
This is referencing both of Urshifu's forms. It might very well be a dual set, the new December 2020 Set S5 that could be based off the Isle of Armor Expansion (Not confirmed but it's very likely).
It would make perfect sense, since a new sub generation (2nd year) of Sword & Shield will come (similar to Ultra Prism and Team Up). This set would be the main focus for our February 2020 set.
Japanese Sword & Shield Base set came as a dual set too. S1H & S1W Sword & Shield. Time will tell what will happen with these trademarks.
What do you think? Let us know!
Thank you abcboy101 for the information.