There will generally be three supported versions of Structured Data Files (SDF)
at any given time. When a new version is released, a sunset date is announced
for the previous version. A version is considered deprecated once a sunset date
has been announced for it.

The minimum deprecation period for most versions will be 6 months. While
deprecated versions remain available until the scheduled sunset date, users are
encouraged to use the deprecation period to migrate to a newer version. After
the sunset date, deprecated versions will no longer be available.

> [!NOTE]
> **Note:** The default SDF version will be increased to the next oldest version 4 weeks before sunset.

*** ** * ** ***

The schedule of the announced deprecation and sunset dates:

| SDF Version | Deprecation Date | Sunset Date |
|---|---|---|
| v3.1 | August 26, 2019 | March 2, 2020 |
| v4 | August 26, 2019 | March 2, 2020 |
| v4.1 | August 26, 2019 | March 2, 2020 |
| v4.2 | August 26, 2019 | March 2, 2020 |
| v5 | January 11, 2021 | July 12, 2021 |
| v5.1 | January 11, 2021 | July 12, 2021 |
| v5.2 | September 8, 2022 | March 8, 2023 |
| v5.3 | September 8, 2022 | March 8, 2023 |
| v5.4 | August 24, 2023 | February 27, 2024 |
| v5.5 | March 27, 2024 | October 3, 2024 |
| v6 | July 30, 2024 | April 30, 2025 |
| v7 | May 7, 2025 | November 4, 2025 |
| v7.1 | August 21, 2025 | March 3, 2026 |
| v8 | August 21, 2025 | March 3, 2026 |
| v8.1 | August 21, 2025 | March 3, 2026 |
| v9 | June 29, 2026 | January 28, 2027 |
| v9.1 | June 29, 2026 | January 28, 2027 |
| v9.2 | June 29, 2026 | January 28, 2027 |