According to the latest announcement by The LEGO Group, the March release of DOTS sets will be the last, as LEGO ends the theme in 2023. Arguably the most colourful line up of LEGO products (including all 2022 releases) will be available until the end of the year.
Here is the official statement by The LEGO Group:
Dear all,
After careful consideration, we have decided to exit the LEGO® DOTS theme and integrate tile-based play into other themes within our portfolio.
January and March launches of LEGO DOTS novelties will go ahead but also be our last on this theme, with all current items from 2022 remaining active in the product line up until the end of the year.