In the November 2023 edition of the ITU News magazine (link above) there is an interesting passage about leap seconds on page 11:
Similar questions about global timekeeping came up a decade ago, in an ITU News Magazine edition published in 2013. As the foreword from François Rancy, then-Director of the ITU Radiocommunications Bureau, said: “Modern times — is the leap second history?” Now, 10 years later, it could well be the case.
This is interesting. It implies they haven't externally settled the leap second question yet, and probably haven't internally settled it either.
The magazine was published on November 2, before the conference started.
Another interesting passage:
CGPM, in fact, took a decision on a continuous reference time scale in November 2022, supporting the abolition of the leap second. The remaining work, such as ITU cooperation with international organizations and updates to Recommendation ITU–R TF.460, falls under the responsibility of relevant ITU–R working groups.
This wording is very revealing. It sure sounds like the ITU hasn't fully committed to agreeing with CGPM's vote to abolish the leap second, and could strike it down at any time.
Unfortunately, I couldn't find any new information about the decision since the conference started. I found the link to the agenda for WRC-23, but the Word document is only a few pages long and doesn't mention leap seconds at all.