It looks like our fleche is just about ready to be erected, having arrived in a custom made kit and a bit of protective plywood covering. It will be placed over nave where the small transepts for entrance and exit meet it. It means "spire" and is an architectural accent and when used in Catholic architecture usually denotes a relatively important part of the building.
It doesn't contain a bell and is usually relatively small compared to the steeple, although some French cathedrals like Notre Dame and others have a tall, prominent spire.
Keep watch this week for the silhouette of the church building to change if workmen erect the fleche within the next few days.