BTW, I still see Gaya Tumuli slated for 2021. Korea no longer has a nomination for 2021. The Gaya Tumuli will be submitted in 2021 and evaluated by the WHC in 2022.

http://www.hidomin.com/news/articleView.html?idxno=407881

http://www.ksmnews.co.kr/default/index_view_page.php?idx=275231&part_idx=270

5 new nominations were submitted to the Cultural Heritage Administration of Korea for Tentative List consideration. In addition, a discussion will take place on the selection of priority nominations for listing in the near future. Official documents can be found here, all files are in Korean.

Candidates for Tentative List Update
Goryeo Ruins of Namhan River Basin Temples in Wonju
Yangju Hoeamsa, archetype of Zen Temple in East Asia
Seongju Royal Placenta Chambers
Catholic Relics in Chungnam Province
Buan Goryeo Celadon Kilns

Priority Nomination(s)
Hanyangdoseong, the Seoul City Wall (Cultural)
Daegokcheon Stream Petroglyphs (Cultural)

https://www.yna.co.kr/view/AKR20200123124700057

The Cultural Administration of Korea rejected all 5 of these potential tentative nominations! Strict requirements to demonstrate OUV, management plans, maps/buffer zones, and at least basic comparative analysis is quite impressive just to get a spot on the official tentative list. I am more surprised that "Catholic Relics in Chungnam Province" did not make it since, it seemed the strongest of this specific batch of candidates.