Audio design received a massive, AAA-grade upgrade in 5.0.0f4. Unity replaced its basic audio system with an advanced architecture that mimicked physical studio mixing consoles.
Sound design was overhauled in this release. Unity 5.0.0f4 introduced a professional-grade that resembled a digital audio workstation (DAW). It allowed developers to: Route audio signals into various groups. Apply real-time effects like reverb, echoes, and ducking.
At its core, the release of Unity 5.0.0f4 addressed a major bottleneck that had plagued complex projects during the Unity 4.x era: memory limitations.
: Unity 5 introduced a new Standard Shader with physically-based shading (PBS), designed to make materials look consistent across different lighting conditions.