0.99.4.2a (version)

0.99.4.2 - September 8th, 2019

 * 1) Intel Open Image Denoiser
 * 2) *Requirement: Windows x64, 4GB memory
 * 3) *Installation: download  and extract the content to your   folder.
 * : denoise rendered images in the preview mode. use mouse wheel to zoom in/out, left-drag to move image.
 * : render additional albedo and normal images to help the denoiser to preserve details. note that it does not always improve the quality.
 * : clamp energy to reduce noises.

Source
Update log of the official github page.