For normal users:

Updated to MC 1.21.6 and 1.21.7.
Fixed LODs rendering in front of terrain in dimensions which don't have translucent blocks as part of worldgen (nether and end).
Waypoint renderer is now more glowy.
Added another end fractal structure.
Fixed bamboo spawning in lakes and rivers.
Powder snow now spawns in frozen caves.
Voidmetal armor can now have trims applied to it.
Fixed bonemeal not producing flowers in big globe worlds.
Abandoned cities now contain copper bulbs, in addition to redstone lamps.
The small puddles of water that spawn in swamps now place mud around and below themselves.
Fixed obelisks rarely getting cut off at chunk boundaries.
Satin is no longer required for waypoint or hyperspace effects in old MC versions.
Temporarily disabled worldgen integration for Voxy 0.2.x, as integration with Voxy 0.2.x was always bad and broken and made Voxy very unhappy.
- Worldgen integration will be re-added if/when Voxy gets an API for this.
- Worldgen integration still works fine with Voxy 0.1.5 in MC 1.20.4.

For data pack users:

Added perlin grids (derivative perlin grids are not yet implemented, but are planned).
Added rotation and mirror fields for StructurePiece instances.
Mega trees can now be moved by structure overriders.
Inline layer definitions are back to being unsupported again.
- This is because inline definitions do not have an ID associated with them, but LOD rendering syncs them to the client as a registry, which requires an ID.