Might just not have been updated because it was only recently confirmed. For example, the RadioTimes doesn't mention it because that was prepared before the new schedule had been sorted out.
As Sqad says, France need a bonus point (4 tries). Also need to win by 21 points or more. All of that points towards Wales holding onto the overall title, might be too much for France to achieve all that against Scotland, who seem to be a much better side these days.
// Scotland, who seem to be a much better side these days. //
several of Scotland's top players play for English clubs, who would be within their rights to refuse to release them as this game falls outside the international "season". who wins may depend on who Scotland can actually get to play.
"Six Nations Rugby are pleased to confirm that an agreement has been reached with Premiership Rugby for the release of Scottish players for the final rescheduled fixture of the 2021 Guinness Six Nations Championship, France v Scotland,"