Many thanks to @toutelatele who has tweeted that Keanu Reeves will be a guest on Thursday March 20 on the show Le 1945. They have tweeted the following link. I am not seeing any guest list or indication that it willbe live streamed. If there are any French readers who can provide further information about the show from the link, please leave a comment. thank you.
It is not clear, if the segment was taped at one of the press junkets or if it will be a live appearance.
Update: Many thanks to Titou for the link she left in the comments!. Keanu will be on the set of Le 1945 tomorrow to promote 47 Ronin and Man of Tai Chi. I suspect he is in transit to France unless he is already there.
I have tweeted to toutelatele and asked if they will be live streaming the show or posting a video of it afterwards. I will update if they answer, regardless, the potential is there for new photos.