The Somna HC Reserve Edition came out today in the US but it is listed as the C variant for the Somna HC (which was released earlier this year with 2 covers). However, the oversized Reserve Edition released today only reprints the first issue of the series, and should probably be listed as a variant for that first issue and not as a variant for the previous HC, which reprints the entire series. It should also be noted that the Reserve Edition is limited to 500 copies. The cover art also has a yellow Eisner Winner stamp in the top right that is not present on the image in CLZ, however I don’t have a good scan of that.
I have relocated the Reserve Edition, corrected the entry and managed to find a cover which replaces the preview art you mentioned.