Release Notes

Changes to EC3 by release, newest first.

The latest release is 171.3.8, released 2026-09-30. Its notes are at the top of Last 12 months.

Last 12 months

Last 12 months lists every release from 2025-10-01 to 2026-09-30, newest first.

Archive

Older releases are in the Archive, organized by year:

• 2025 - releases 171.2.0 to 171.2.2 (September 2025)

• 2024 - release 148 (January 2024) and the April, May and June 2024 updates

• 2023 - releases from July to December 2023

A release moves from Last 12 months to the Archive once it is more than 12 months old.