Yes, January 1st to March 31st counts as 2021. Look up fiscal calendars.
The Top 800 Duelists in Japan will get a playmat of the Chaos Monsters, “Black Luster Soldier – Envoy of the Beginning” and “Chaos Emperor Dragon – Envoy of the End”
The Top Ranking Duelists in each Area of Japan will get a playmat of the Obelisk Force and their Ancient Gear Army based on a new card from History Archive! A total of 1200 will be given out.