Synergy/DE Release Strategy

8Supported Versions

The table below shows end-of-support dates for all Synergy/DE versions.

Synergy/DE Version Release Date End-of-Support Date
LTS Release
Mar. 8, 2024 Mar. 8, 2028
Four years after its release date OR one year after the next LTS version is released — whichever is later
Feature Release
Dec. 14, 2023 Jun. 8, 2024
The date of the next feature release or LTS release—plus three months Oct. 4, 2023 Mar. 14, 2024
The date of the next feature release or LTS release—plus three months
LTS (Long-Term Support) Release
Apr. 1, 2022 Apr. 1, 2026
Four years after its release date
one year after the next LTS version is released
—whichever is later
11.1 and lower Sep. 30, 2019 (11.1) Retired
11.1 reached end-of-support Sept. 30, 2023, four years after its release date

Critical fixes (for production-down issues) and urgent security updates will be provided for each Synergy/DE version until its end-of-support date. Other fixes will be provided in LTS updates and subsequent feature releases.

We recommend you stay current with your Synergy/DE version, and with updates to your version, to keep your system secure and performing well. Synergex’s Developer Support team will try to assist you with any Synergy/DE version, but their ability to help with versions past their end-of-support date may be limited.

For Synergy DBL Integration for Visual Studio (SDI), only the current build is supported. Each subsequent SDI build immediately replaces the previous build as the supported version.

Synergy/DE’s runtime version targeting enables you to use the latest feature-release and SDI tools while deploying to an LTS release or feature release production platform.

Long-Term Support (LTS) Releases

Our release strategy for Synergy/DE products combines long-term support (LTS) releases with feature releases. LTS releases provide a stable platform that’s supported for an extended period of time, with only quality, security, and platform updates—no new features. The primary characteristics of an LTS release are

  • A two-year release cadence, allowing you to plan your own updates accordingly
  • A four-year minimum support period (or one year after the next LTS release ships, whichever is longer)
  • Limited changes to the code base

Because Synergy has close ties with Microsoft .NET, we’ve broadly aligned our release schedule with the .NET release schedule, which also uses an LTS strategy and a two-year cadence. Version numbers for LTS releases have an odd major revision number, for example, 12.1.

Feature Releases

Feature releases deliver the latest technologies and enhancements, which build consecutively to the next LTS release. The primary characteristics of a feature release are

  • Access to new features and enhancements as soon as they’re completed
  • A more frequent release cadence
  • A shorter period of support (three months after a subsequent feature or LTS release)

While feature releases are fully tested, quality may be lower in areas where new code has been added or significant changes have been made. Quality will solidify as developers exercise the new features and our automated test suites are extended. Version numbers for feature releases have an even major revision number, for example, 13.2. Fixes to a feature release will only be provided via the next feature (or LTS) release.