Netflix new releases are set to add four more titles before September ends, including the two-part special LEGO ONE PIECE, the anime feature Mononoke The Movie: Chapter III – The Curse of the Serpent, the combat-reality series The Arena and the documentary The Widower: ‘Til Death Do Us Part.
The final batch is scheduled for September 29 and September 30, according to Netflix’s official September release guide, giving subscribers a last group of new viewing options before the platform moves into its October lineup.
Table of Contents
Netflix New Releases: Netflix releases coming before October
| Date | Title | What it is |
|---|---|---|
| September 29 | LEGO ONE PIECE | A two-part animated special retelling the Straw Hats’ early journey. |
| September 29 | Mononoke The Movie: Chapter III – The Curse of the Serpent | An anime film set in the supernatural world of the Medicine Seller. |
| September 30 | The Arena | A competition series featuring 38 amateur fighters seeking €100,000 and a professional MMA contract. |
| September 30 | The Widower: ‘Til Death Do Us Part | A documentary investigation into a suspected serial killer whose relationships spanned decades. |
LEGO ONE PIECE arrives September 29
LEGO ONE PIECE is a two-part special in which Usopp, voiced by Jacob Romero Gibson, recounts the Straw Hats’ journey from the East Blue toward the Grand Line before Chopper joins the crew.
The release expands Netflix’s ONE PIECE offering with a family-oriented animated format tied to the franchise’s best-known early adventures.
Mononoke closes its latest film chapter
Mononoke The Movie: Chapter III – The Curse of the Serpent follows tragedy inside the Ōoku, where human resentment and unresolved grievances create a dangerous new opponent for the Medicine Seller.
The title is the latest entry in the stylized Japanese animated film series and is scheduled to arrive on the same day as LEGO ONE PIECE.
The Arena brings amateur fighters into the spotlight
The Arena puts 38 amateur fighters through physical tests and cage bouts as they compete for a €100,000 prize and a professional mixed-martial-arts contract.
The series adds a combat-sports format to Netflix’s growing selection of unscripted competition programming and is set for September 30.
The Widower examines a decades-long case
The Widower: ‘Til Death Do Us Part follows a journalist and a detective as they investigate a man whose charm allegedly concealed a trail of failed marriages and suspicious deaths over more than 30 years.
The documentary arrives as Netflix continues to expand its true-crime catalogue with case-driven films and series built around interviews, investigation and historical records.
Major Netflix additions already released in September
September’s broader schedule has included the second season of The Gentlemen, the anthology drama Monster: The Lizzie Borden Story and the comedy Best of the Best.
The month also brought Physical 100: Italy, Why Did I Get Married Again?, Call My Agent!
The Movie, Crew Girl and the documentary Tribeca 25.
Netflix’s schedule also featured library additions such as 17 Again, About Time, Alien, Aliens, Scarface, Sleepless in Seattle and several Resident Evil films, although availability can differ between countries because licensing agreements are regional.
What Canadian subscribers should know
The Netflix release calendar is a useful guide, but the titles displayed to Canadian subscribers can vary from the catalogue shown in the United States or other markets.
Netflix says regional licensing and rights affect which films and shows are available in each country, so viewers in Canada should confirm the title directly in the Netflix app or through the Canadian catalogue before planning a watchlist.
Release timing may also vary slightly depending on the title and local service update, meaning a programme listed for September 29 or September 30 may appear at a different hour than expected.
What comes next
The September calendar ends with the four releases scheduled for September 29 and September 30, while Netflix’s autumn slate will continue into October with additional films, series, documentaries and licensed catalogue titles.
For viewers choosing what to watch now, the final September additions offer a mix of animation, anime, combat competition and true crime rather than one single dominant genre. Netflix’s film catalogue also includes other titles available to stream.
Frequently Asked Questions
What are the final Netflix new releases for September 2026?
The final scheduled additions are LEGO ONE PIECE and Mononoke The Movie: Chapter III – The Curse of the Serpent on September 29, followed by The Arena and The Widower: ‘Til Death Do Us Part on September 30.
When does LEGO ONE PIECE arrive on Netflix?
LEGO ONE PIECE is scheduled to arrive on September 29, 2026.
What is The Arena about?
The Arena follows 38 amateur fighters through physical challenges and cage bouts as they compete for €100,000 and a professional MMA contract.
Is The Widower: ‘Til Death Do Us Part a scripted series?
No, it is a documentary about a journalist and detective investigating a suspected killer connected to multiple marriages and suspicious deaths.
Will every September Netflix release be available in Canada?
Not necessarily, because Netflix catalogues vary by country due to regional licensing and rights agreements, so Canadian viewers should check the title in the Canadian Netflix catalogue.
Fact-Checked: Key release dates, title descriptions and regional-availability guidance were checked against Netflix’s official Tudum and Help Centre information.
Disclaimer: Release schedules and catalogue availability can change, and Netflix may update titles or timing by country.