DSD is now included in the description under the Technologies tab as well as posted with each individual UD1S album. NOTE: There are a few albums without the DSD statement added. I'm not sure if that means the album was created from the original tape without the use of a DSD file or if they (hurriedly) missed a few albums in the description upgrade. Either way, they seem to have felt the heat and have complied with better transparency.
My opinion, though, is they should further update their Technology statement with a detailed description as to why they do it in this manner. While they have gone to great lengths to describe and market the UD1S process and purpose, this new reveal about DSD should also include a full and complete disclosure of the technological details and why it serves purpose. Maybe sometime soon?