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Firebird is used by approximately 1 million of software developers worldwide. High compatibility with industry standards on many fronts makes Firebird the obvious choice for developing interoperable applications for homogeneous and hybrid environments.
Last updated: June 2019.

This document states the current development activities of the project and establishes the estimated release schedule for the foreseeable future. It gets periodically updated in order to be in line with the reality.

The project's development resources are currently dedicated mostly to the v3.0 and v4.0 development. Firebird v2.0 series has been discontinued in 2012, the last release in this series is Firebird 2.0.7. Firebird v2.1 series has been discontinued in 2014, with Firebird 2.1.7 being the last release there. Firebird v2.5 series was just updated with the Firebird 2.5.9 release and is also discontinued now.

For more details about the anticipated releases, read on.

Stable Releases

Firebird v3.0 (released in 2016) is currently the only supported stable release series. Firebird v2.5 series is finished with the 2.5.9 release, see below.

Series 2.5.x
The latest release currently available in this series is v2.5.9. Explore its download location or documentation.

This series is discontinued in Q2 2019, maintenance releases will not be provided anymore.
Track details

Series 3.0.x
Version series 3.0.x is the latest one released by the project and thus it has the highest priority in terms of the bug fixing, with updates scheduled quarterly. All kinds of bugfixes and performance improvements are possible inside its codebase, including ports to new platforms.

Key points:
  • Revised architecture, including new authentication and configuration subsystems;
  • Scalable (SMP/multi-core friendly) multi-threaded engine with the shared page cache;
  • New ODS (version 12) with new system and monitoring tables;
  • External (Java, C++, etc) stored procedures/triggers/functions;
  • Security enhancements;
  • Various SQL extensions.
The latest release currently available in this series is v3.0.4. Explore its download location or documentation.

v3.0.5 is the next point release to come, it's scheduled for Q3 2019. Follow the "Track Details" icon for a list of bugfixes scheduled for this version.
Track details

New Development: version 4.0
Firebird 4.0 represents the project's next milestone release after v3.0, its development has been started in March 2016.

You may check what features to expect at the v4.0 planning boardUse the "Track Details" icon to discover the list of tasks currently scheduled for v4.0 Beta 2 Release.

Beta 1 preview release is available for testing. Daily v4.0 builds can be downloaded from the snapshot area.
Track details
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