Below is a listing of 3.15 Releases and links to their release notes:
- X Platform 3.15.4 — Release Date: August 19th 2020
- X Platform 3.15.6 — Release Date: February 8th 2021
- X Platform 3.15.7 — Release Date: February 24th 2021
- X Platform 3.15.9 — Release Date: May 3rd 2021
- X Platform 3.15.10 — Release Date: May 11th 2021
- X Platform 3.15.12 — Release Date: June 14th 2021