According to recent reports, it appears that Meg is no longer part of the Family Guy cast. This is based on a report from Deadline, which states that voice actress Mila Kunis has not been asked to return for the show’s 19th season. While this does not necessarily mean that Meg will be written out of the show, it seems likely given Kunis’ absence.
This would be a major change for Family Guy, as Meg has been a part of the show since its debut in 1999. She has been through a lot over the years, including being bullied at school, being rejected by her family and friends, and even becoming possessed by a demon. Despite all of this, she has always remained a loyal member of the Griffin family.
If Meg does indeed leave Family Guy, it will be interesting to see how the show handles her departure. It is possible that they may simply write her off as moving away or going to college, but given her importance to the series, it seems more likely that they will give her a send-off worthy of such a long-running character.