In a q and a at a fan convention Shannen Doherty spoke about how she was approached to reprise her role as Prue however she didn't like the way they wanted to bring her back. She rejected their offer as she believed Prue deserved better if she was going to come back.
The final shot of the show (the camera panning away from the manor) is actually recycled from the fourth season finale Witch Way Now? (2002) . However, the Angel of Destiny has been removed and the shot's lighting has been edited. Due to extensive budget cuts the crew had to film everything in studio, making an exterior shot impossible.
"Something wicca this way ends" was a title considered for the finale. At the end, they chose "Forever Charmed" instead.
This was the series finale.