No, it supports c# 6 without dynamics but uses the 2.0 runtime. Now that mono is open source, they are updating the runtime to be current. There's a project ou

No, it supports c# 6 without dynamics but uses the 2.0 runtime. Now that mono is open source, they are updating the runtime to be current. There's a project out there that swaps the mono compiler with Roslyn and gives some nice edit and continue features for Unity.