Yeongcheon Imjin River Biosphere Preservation Area is being planned for final decision in July 2019. This region sits on the border between North and South Korea. Note that this nomination is for a UNESCO Biosphere Reserve.

http://thesegye.com/news/newsview.php?ncode=1065609456582576

Baekdudaegan: Mt. Geumgangsan and Mt. Seorak is a proposal to link two tentative nominations into one mixed site that would connect both national parks through the DMZ.

http://www.yonhapnews.co.kr/bulletin/2018/09/28/0200000000AKR20180928152500062.HTML

DMZ Cultural Heritage Joint Symposium (November 6th, 2018) this symposium was just held at the National Palace Museum in Seoul.

http://www.cha.go.kr/cop/bbs/selectVideoNewsBoardArticle.do?nttId=73165&bbsId=BBSMSTR _1052

"Gyeonggi-do plans to apply for registration by 2022 . . ."

This might be a bit optimistic. However, I wonder if we'll see an official tentative nominations in the next year or two?

"we are also considering ways to register it as a 'World Heritage Site' that encompasses both natural and cultural heritage."

There has never been a mixed WHS on the Korean peninsula.

http://www.koreaherald.com/view.php?ud=20190203000019

https://news.sbs.co.kr/news/endPage.do?news_id=N1005124050&plink=NEW&cooper=SBSNEWSSE CTION