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- June 19: A huge long-term collaborative effort is completed, showing that all glider-constructible still lifes can (at least in theory) be constructed using less than two gliders per bit.
- June 2: Goldtiger997 completes a glider-to-25P3H1V0.2 converter, based on Martin Grant's 25P3H1V0.2 synthesis from 2017.
- May 29: Thomas Cabaret makes available a Passe-Science video featuring self-constructing CA patterns, including several minutes showing details of the 0E0P metacell.
- May 25: Goldtiger997 completes a glider-to-crab converter, with the help of a script implementing a universal glider synchronization toolkit.
- Apr. 21: Improvements to glider syntheses mean that every 15-bit still life has a recipe with at most 13 gliders. The upper limit is currently 12 gliders for 14-bit still lifes, 10 gliders for 13 bits, 8 gliders for 12 bits, and 7 gliders for 11 bits.
- Apr. 17: Tanner Jacobi and Matthias Merzenich set several new bounding-box records with a new glider gun mechanism based on filtered MWSSes.
- Apr. 14: Michael Simkin completes a self-constructing puffer pattern which he calls Remini ("retro Gemini"), using a single-channel design with nothing but 1970s circuit mechanisms.
- Apr. 10: Jeremy Tan releases a new glider recipe database, Shinjuku, specifically for tracking lowest-cost syntheses.
- Apr. 6-7: LifeViewer standardizes support for triangular neighbourhoods starting with Build 320.
- Apr. 5: An exhaustive computer search run by Nathaniel Johnston reveals that there are 14,223,867,298 strict and 15,851,861,075 pseudo 33-bit still lifes, including eleven pseudo still lifes that can be partitioned into three stable pieces but not two, and none that can be partitioned into four stable pieces but not two or three.