The eighth player is still unknown. A Fide.com subdomain that I had never seen before, FIDE World Championship. Cycle 2021-2023 (worldchampionshipcycle.fide.com), includes Sergey Karjakin as a participant, but with an asterisk against his name:-
World Cup runner-up; (* : Suspended by a decision of FIDE EDC. Subject to appeals.)
See a previous post on this blog, The Karjakin Affair (March 2022), for background. I could have written a companion post, 'The Ding Liren Affair', but decided that it was premature. See Ding Liren on his way to the Candidates (chessbase.com), for a different opinion. Instead of speculating on the eventual outcome, I'll just wait for FIDE's decision. It should come soon.
For a comprehensive explanation of the current status of the Candidates tournament and of the subsequent title match, see
- 2022-04-28: FIDE Candidates Chess Tournament 2022: All The Information
- 2022-05-03: FIDE World Chess Championship 2023: Everything We Know So Far
Both pages are from Chess.com. The WCC title match is not yet listed on the FIDE calendar. Although the previous title match, 2021 Carlsen - Nepomniachtchi (m-w.com), was held at the end of last year in Dubai, it was originally scheduled for end-2020.