Changelog:
version 2: new algorithm variation, that leads to more photo realistic results. You can now select a separate clean strength for chroma & luminosity. Speed improvement (multithreading) , and improved memory usage.
version 3: implicitly comes with a fourth algorithm. But now algorithms are presented differently, you have instead twoquality tweaks, which leads to four combinations. The Anti Edge Loss setting was dropped.
version 3.1 : The vibrant surfaces tweak has been improved (version 2). Interface rethought.

Few notes related to controls:
Quality Tweaks: The Vibrant Surfaces v2 tweak is the most useful, and probably should be checked all the time. Despite results look sharper with the Solid Edges tweak, it can be sometimes tempting to disable it. Indeed, when the Solid Edges tweak is disabled, surfaces look smoother and edges more regular too.
Uniform Color Space: When this option is checked, the plugin use internally a more appropriate color space for denoising. In order to work properly, this option needs that you use sRGB as your default color profile in Photoshop.
Lessen Bit Precision: Check if you want to use less RAM.