Released overnight, download and release notes
Big changes/additions to lighting, particles, Daydream/Cardboard/Switch/Gameroom build targets etc. Shame the 2d tile tools didn’t make it, but hey, there’s always Unity 6!
Note if you use Playmaker, 5.6 will break it. Playmaker has released an update on the Asset Store (1.8.4) that fixes the issue.