
Unity 2019.3, a preview build, already supports HDRP and real-time ray tracing. It also improves depth of field, SSAO, and the shadow framework.
Unity 2019.3 is essentially a beta for the stable Unity 2019.4 build, set to launch this spring. Still, developers can already explore the new engine's capabilities with this preview version.
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Unity 2019.3's key additions include full support for HDRP (High Definition Render Pipeline) and a real-time ray tracing preview built upon it.
Additionally, Unity 2019.3 brings improvements to Depth of Field, Screen Space Ambient Occlusion, and the overall shadow framework.
Source: Unity