As a long time Jeopardy fan I commiserate with any of you tired of having your Jeopardy hosts switch out.
While they were kind enough to narrow it down to two this time, they contend they will continue to alternate between Mayim Bialik and Ken Jennings as hosts.
Mayim is the host of a Jeopardy spin off that features specific groups of challengers. Currently running is a competition between professors.
When the special competition ends on 12/17, the show will return to regular shows the following Monday with Ken Jennings as host.
Presumably Mayim will return as host of the regular show at some point.
This is expected to go on till at least the end of this season on July 29th 2022.