Unity 6 Engine

Unity 6, released in late 2024, was the biggest editor update in years and the first release under Unity's new, more predictable versioning scheme (followed by non-breaking 6.x updates). Key technical additions include the GPU Resident Drawer system for faster rendering of scenes with lots of instanced objects, Adaptive Probe Volumes for more natural lighting, hardware ray-tracing support, early WebGPU support, and built-in AI tools Unity Muse and Unity Sentis. For MMO development specifically, the reworked multiplayer tooling stands out — the engine is clearly aiming to make building multiplayer games easier out of the box.