Summary
Version 3.4 entered the long term support phase on 12-SEP-2025. Therefore all versions before are End of Life (EOL).
Customers with a valid support subscription purchased before 12-Sep-2025 can request support and/or bug fixes for the LTS version. All other customers needs to upgrade to the MLS first.
Long Term Support (LTS)
When a new mainline release comes out, the version just before it enters Long Term Support (LTS). For example, if version 4.0.0 is released, the 4.0.x series becomes the mainline, while the latest 3.x.x moves into LTS.
During the LTS phase:
- No new features are added
- Bug fixes are provided if needed
- The standard LTS period lasts one year (365 days) starting from the release of the next mainline version
This gives customers with a valid OPC UA Support Subscription at least one year of transition time to update your application.
Customers with a valid OPC UA Support Subscription at the time a version enters the LTS phase can request support and/or bug fixes for the LTS version. All other customers needs to upgrade to the MLS first.
New purchases of a OPC UA Support Subscription are always for the MLS.
End of Life (EOL)
When a product’s LTS period ends, it enters End of Life (EOL). From that point on, no further updates, fixes, or support are provided.
If your application relies on a version that is nearing EOL, we strongly recommend upgrading to the latest mainline release. If upgrading is not possible, you may choose the source code edition of the OPC UA Support Subscription product, which allows you to maintain and fix it yourself.
Intended Outcome
Version 3.4 End of Life (EOL) is 12-SEP-2026.
Summary
Version 3.4 entered the long term support phase on 12-SEP-2025. Therefore all versions before are End of Life (EOL).
Customers with a valid support subscription purchased before 12-Sep-2025 can request support and/or bug fixes for the LTS version. All other customers needs to upgrade to the MLS first.
Long Term Support (LTS)
When a new mainline release comes out, the version just before it enters Long Term Support (LTS). For example, if version 4.0.0 is released, the 4.0.x series becomes the mainline, while the latest 3.x.x moves into LTS.
During the LTS phase:
This gives customers with a valid OPC UA Support Subscription at least one year of transition time to update your application.
Customers with a valid OPC UA Support Subscription at the time a version enters the LTS phase can request support and/or bug fixes for the LTS version. All other customers needs to upgrade to the MLS first.
New purchases of a OPC UA Support Subscription are always for the MLS.
End of Life (EOL)
When a product’s LTS period ends, it enters End of Life (EOL). From that point on, no further updates, fixes, or support are provided.
If your application relies on a version that is nearing EOL, we strongly recommend upgrading to the latest mainline release. If upgrading is not possible, you may choose the source code edition of the OPC UA Support Subscription product, which allows you to maintain and fix it yourself.
Intended Outcome
Version 3.4 End of Life (EOL) is 12-SEP-2026.