The updated versions of the renderer bring several new features and a bunch of fixes.
AMD announced the availability of Radeon ProRender 3.3, a new version of the free, physically accurate GPU renderer, for Blender and Maya. Both versions have got support for Fog and Heterogenous Volume rendering. Maya edition now has an option of exporting DeepEXR and the support for the Voronoi Texture node. The Blender version now includes support for the Blender Volume Scatter node and Principled Volume shader.
What's more, both versions come with a huge list of fixed bugs and issues that were encountered in the previous version, making the working process more convenient and less stressful.