Title: Grey's Anatomy (season 14)
Content:  The fourteenth season of the American television medical drama Grey's Anatomy was ordered on February 10, 2017, by American Broadcasting Company (ABC), and premiered on September 28, 2017 with a special 2-hour premiere. The season consists of 24 episodes, with the season's seventh episode marking the 300th episode for the series overall. The season is produced by ABC Studios, in association with Shondaland Production Company and The Mark Gordon Company. Krista Vernoff who helped co-lead the show with Shonda Rhimes in its early years, marked her return as co-showrunner this season with William Harper, having previously left at the end of the seventh season. Rhimes 
Title: Grey's Anatomy (season 14)
Content:  Grey's Anatomy was renewed for a 14th season on February 10, 2017. It premiered on September 28, 2017, with a 2-hour premiere. Ellen Pompeo announced that she would be directing several episodes in the 14th season. On April 28, 2017, veteran writer Krista Vernoff announced that she would return to the show as a writer after leaving the show after the seventh season. On January 11, 2018, ABC released a 6-episode web series following the new surgical interns at Grey Sloan Memorial Hospital. The web series was written by Barbara Kaye Friend and directed by series-regular Sarah Drew.
Title: Grey's Anatomy
Content:  also re-entered the Top 5 shows in the 18–49 viewer demographic. On May 7, 2015, ABC renewed the series for a twelfth season that premiered on September 24, 2015, and concluded on May 19, 2016. The thirteenth season aired from September 22, 2016, to May 18, 2017. The fourteenth season aired from September 28, 2017, to May 17, 2018. The fifteenth season aired from September 27, 2018, to May 16, 2019. The sixteenth season aired from September 26, 2019, to April 9, 2020. The seventeenth season aired from November 12, 2020, to June 3, 2021. On May 10, 2021, the series was renewed for an eighteenth season, which premiered on September 30, 2021.
Title: Grey's Anatomy (season 14)
Content:  it was announced that both Jessica Capshaw and Sarah Drew would leave the series following the conclusion of the season. It was released on April 4, 2018 that a familiar character would be returning to the set later on in the season as Sarah Utterback's Nurse Olivia Harper would be revisiting Grey Sloan, not as a nurse but as mom of a patient. Details of her storyline or duration of arc have yet to be released. On April 20, 2018, it was released that Geena Davis would return for the episode "Cold as Ice" as Dr. Herman to present a new opportunity for Arizona.
Title: Grey's Anatomy (season 14)
Content:  ABC to produce television for Netflix, and now has a hands-off approach to the show. Despite not being showrunner since its eighth season to run Scandal, Rhimes still signed off each episode's storyline, but this season marked a departure from this. Rhimes explained she only trusted Vernoff to pursue uncharted territory without her. As such, drastic creative changes occurred in the season, with Vernoff retiring Martin Henderson, Jessica Capshaw, and Sarah Drew's characters. Jason George also departs as Ben Warren to appear in the second spin-off, Station 19. On April 20, 2018, ABC officially renewed Grey's Anatomy for a network primetime drama record-tying fifteenth season.
Title: Grey's Anatomy (season 17)
Content:  The seventeenth season of the American medical drama television series Grey's Anatomy was ordered in May 2019, by the American Broadcasting Company (ABC), as part of a double renewal with the sixteenth season. Shortly after, Krista Vernoff signed an agreement to continue serving as the showrunner of the series. Filming on the series began in September 2020 while the season did not premiere until November 12, 2020, both dates being delayed as a result of the COVID-19 pandemic, for the 2020–2021 broadcast television season. The impact of the COVID-19 pandemic on television only allowed seventeen episodes to be produced, the fewest of any season since the fourth season. Numerous safety 
Title: Grey's Anatomy (season 12)
Content:  announced that Grey's Anatomy would air 8 episodes in the fall with the fall finale to air on November 19, 2015, just like the rest of ABC's primetime lineup "TGIT" Scandal and How to Get Away with Murder, which was the same last year. The remaining 16 episodes will air after the winter break, beginning on February 11, 2016, and ending on May 19, 2016, as a result of ABC airing the television miniseries Madoff over 2 nights on February 3–4, 2016 in the same time-slot as Grey's Anatomy and Scandal. On March 3, 2016, ABC announced that Grey's Anatomy was renewed for a 13th season.
Title: Grey's Anatomy (season 14)
Content: Kim Raver as Dr. Teddy Altman ; Greg Germann as Dr. Tom Koracick ; Jake Borelli as Dr. Levi Schmitt ; Debbie Allen as Dr. Catherine Avery / Catherine Fox ; Abigail Spencer as Dr. Megan Hunt ; Matthew Morrison as Dr. Paul Stadler ; Stefania Spampinato as Dr. Carina DeLuca ; Jeanine Mason as Dr. Sam Bello ; Alex Blue Davis as Dr. Casey Parker ; Rushi Kota as Dr. Vikram Roy ; Jaicy Elliot as Dr. Taryn Helm ; Sophia Ali as Dr. Dahlia Qadri ; Lesley Boone as Judy Kemp ; Blake Hood as Clive Johnson ; Bethany Joy Lenz as Jenny ; Justin Bruening as Matthew Taylor ; Nayah Damasen as Kimmie Park ; Peyton Kennedy as Betty Nelson ; Candis Cayne as Dr. Michelle Velez ; Rachel Ticotin as Dr. Marie Cerone 
Title: Grey's Anatomy
Content:  returning guest appearances in season 14, would once again become a series regular, beginning with season 15. In January 2020, Justin Chambers announced that he had departed the series and that his final episode had aired on November 14, 2019. In March 2021, Giacomo Gianniotti departed the series after wanting to pursue new things such as directing. In May 2021, Jesse Williams and Greg Germann both left the main cast, although Germann is expected to remain on the show in a guest capacity. In September 2021, it was announced that Kate Walsh would be returning as Addison Montgomery for multiple episodes in season 18.
Title: Grey's Anatomy (season 4)
Content:  The fourth season of the American television medical drama Grey's Anatomy, commenced airing in the United States on September 27, 2007 and concluded on May 22, 2008. The season continues the story of a group of surgeons and their mentors in the fictional Seattle Grace Hospital, describing their professional lives and the way they affect the personal background of each character. Season 4 had 12 series regulars with 10 of them returning from the previous season, out of which 8 are part of the original cast from the first season. The season aired in the Thursday night timeslot at 9:00 EST. In addition to the regular 17 episodes, a clip-show narrated by the editors of People recapped previous events of the show and made the transition from Grey's Anatomy to Private Practice, a spin-off focusing on Dr. Addison Montgomery and aired 

Question: when does the 14th season of grey's anatomy come out?
Answer: September 28, 2017.