Smaller cursor sizes, on both platforms.
Linux: every theme now carries 12, 16, and 20 px on top of the old sizes, so the ladder runs 12 up to 192 px. Tiny cursors stay crisp now instead of being scaled down from 24. These are clean downscales of the 32 px source art, so the small sizes are some of the sharpest in the set.
Windows: the .cur/.ani files used to hold a single 32 px image and let Windows scale everything. They now embed 16, 24, 32, 48, and 64 px, so small cursors and HiDPI displays get a crisp image instead of a scaled one. Nothing changes in how you install them.
Grab a pack below, or on Linux pull the latest straight in:
mkdir -p ~/.local/share/icons && curl -fsSL https://github.com/0443n/dota2-cursors/releases/latest/download/dota2-default.tar.gz | tar xz -C ~/.local/share/icons