They didn't mention it in their main blog post, but they also support HLG HEVC uploads. Which I believe means people with certain cameras like the Panasonic GH5, the Sony a7RIII, and other Sony high end camcorders can upload directly to Vimeo straight out of the camera with no editing, mastering, transcoding, etc...Vimeo now supports HDR10 HEVC. And unlike YouTube, they actually show a badge indicating the video has HDR. Unfortunately, like YouTube, I don't see a way to search for HDR yet.
It says it works on Apple products now. Hopefully support for Android/Chromecast and other apps are coming.