The Pokemon TCG will be shortening off on its usual Standard form until "early 2023."
Standard is a combination of two major Pokemon TCG formats, and it is the most widely used. In Standard, only the last few years worth of cards are legal to ensure the game''s long-term balance. Unlike Magic: The Gathering, which uses the release of its Autumn set as the cut-off point for rotation, Pokemon has a much flexible time frame and uses Regulation Marks to decide what is and is not legal.
Standard rotation is a tradition starting at the start of a new Championship Series season, just after the end of the World Championships. However, the Covid epidemic has resulted in World Championships being dropped in the last few years, resulting in The Pokemon Company having to make more direct statements on rotation. At the start of the 2022 season, the Standard rotation is usually initiated on September 10, 2021.
This year, we will be hosting a World Championship in London in August. Although you might anticipate that rotation will be held in either August or September, it was announced on the official website that we would instead be getting it in early 2023. All but a handful of promo cards up to and including the Pokemon Go TCG expansion will be playable.
Any cards with D, or E, F Regulation Marks are currently legal in Standard, thus everything from the Sword & Shields base set up to the most recently-released Astral Radiance can be played in organised events and tournaments. With the next rotation, all D cards will no longer be legal removing everything from the Sword & Shield Base set up to the most cards in Shining Fates.
While a reason for this delay was unclear, it is likely to be related to the incoming ninth generation with Pokemon Scarlet & Violet launching in November. It makes little sense to rotate Standard to remove half of the Sword & Shield era without having the Scarlet & Violet Base Set to replace them. However, keeping the D Regulation cards intact prevents the eventual loss of a void in the metagame.