One that was aiming for probably 2023, but isn't anymore:
https://www.lusakatimes.com/2021/11/30/government-halts-campaign-to-have-the-barotse-plains-listed-as-a-unesco-world-heritage-site/

The nomination from Germany is likely to be the Alpine and pre-Alpine meadows in the district of Garmisch-Partenkirchen.
https://www.lra-gap.de/de/unesco-weltkulturerbe.html

However, there are still ongoing discussions with owners and local communities, especially as the nominated areas are far more extensive than originally planned. Much more than one would expect from the TWHS entry.
The map looks really strange.

28 locations in a small area!

Indeed, Maison Carrée in Nîmes for 2023, it seems.

Nîmes : la Maison Carrée sera bien candidate à l'UNESCO en 2023

La Maison Carrée de Nîmes devant le comité du Patrimoine mondial de l'Unesco dans deux ans

I am planning a trip to the region in this May. I checked the map in detail and see that; while driving from Wieskirche to Linderhof, you are automatically seeing the meadows between Graswang and Linderhof on roadside. It does not need an additional effort.

Nyungwe NP (Rwanda) could be 2023 as well: https://www.newtimes.co.rw/news/what-addition-nyungwe-park-world-heritage-list-means

Suriname: The settlement of Joden Savanne and Cassipora cemetery

Dagblad Suriname (in Dutch)

No timing is mentioned in this article, apart from the fact that "an inspector will come to Suriname next year to see if everything is in place for the nomination". So I'm guessing the nomination will be at the earliest for 2023?

Ah, good one! The text says that they are looking for a lobbyist to pull it through..

As a committee member Japan might have the ability to push this nomination through, but they seem to be taking cautious steps now to prevent South Korea from delaying or blocking inscription. Based on Japan's previous controversial nomination being inscribed (2015), in part based on promises to UNESCO / ICOMOS about accurate Historical interpretation (something that at the time appeased S. Korea), this time will be different. I cannot see South Korea accepting this nomination without major concessions from Japan, therefore I expect the nomination to be delayed. It will be interesting to see the ICOMOS evaluation if the nomination proceeds.

Sado Gold Mine Proposed for 2023 World Heritage Candidacy

S. Korea calls for 'immediate retraction' of Japan's Sado mine UNESCO World Heritage application

Thailand cabinet just approved today (4 Jan) to officially ask UNESCO and WHC to host WHC2023.

Meaning Wat Phra Mahathat Woramahawihan is a shoo-in no matter what the report will recommend :/

Zoe
Which I hope won't happen. I won't mind if it's I or R, but I can't deal with token inscriptions that had D or N recommendation. :(

Zoe

2023 should be Si Thep, unless WHC did something with its "incomplete" nomination and put it in 2022 agenda. Si Thep actually a great nomination as a filling gap of Southeast Asia history on Dvaravati period as mentioned by ICOMOS. The worst case maybe "D" from poor and limited comparative study by government old fashioned and nationalist historians as it was happened on Phu Phra Bat case in 2016, that nobody think they have to make comparative study with Senegambia!

If you feel sure about that, I'll switch the nomination years between it and Wat Phra Mahathat.