TL;DR of the paper, generated automatically.

The paper says NanoVDB can now be edited on the GPU, not just read.

• Edits: dilation, merging, pruning, and coarsening or refinement of sparse grids.
• Speed: the paper claims grids of hundreds of millions of voxels rebuild in a few milliseconds.
• Access: active voxels stream as a flat list, which the paper says nears peak memory bandwidth.