After being an important part for two seasons, this show-runner DEPARTS from the upcoming season

It is no secret as to how successful Grey's Anatomy has gone on to become as the show continues to run stronger than ever and is also the longest reigning medical drama on the tube of all time. On that note, it's spin-off show, Station 19 was launched and the same was received well too.

But now, in the upcoming season, a major development is set to happen. According to Hollywood Reporter, Sources tell The Hollywood Reporter that McKee — who had been with Grey's Anatomy since its debut — opted to exit after her overall deal with producers ABC Studios expired. Sources note that McKee is ready to move on in a new direction after spending 15 years with Shonda Rhimes.

McKee developed Station 19, which was born out of Grey's Anatomy's season 13 finale that featured a fire, and ran the second spinoff from the Shonda Rhimes flagship for its past two seasons. The series, which has been a stable performer in its sophomore frame, remains on the bubble for a third season. It is expected back as ABC looks to keep its TGIT-branded Thursday night lineup in place for the upcoming 2019-20 broadcast season.

A new showrunner will have to be named should Station 19 earn a third-season renewal. (Production on season two has already been completed.) A decision on the future of the show will be made in the next couple weeks ahead of ABC's formal presentation to Madison Avenue ad buyers.