In addition to Madeleine's exit from the show, it's been widely speculated that Poppy Drayton, who plays Abigael Jameson-Caine, will be leaving the series. The actress has been posting cryptic Instagram messages, and her character's storyline has all but concluded, leaving fans to speculate. However, because her character hasn't been killed off, that does leave the possibility of a reunion down the line.
Additionally, Season 4 could usher in more than a new Vega sister, as Abigael does leave a loose reference to "her replacement" in a recent episode before her departure. Could Abigael's exit also be setting up a new ally? Or perhaps a new adversary? Fans will have to wait and find out.
So far, there have not been any new casting announcements for Season 4 of Charmed, but with Season 3 wrapping up, it wouldn't be surprising if the CW announced new developments soon. In the meantime, you can catch up on all previous episodes of Charmed via CW.com, or enjoy the original via Peacock.