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RTI is the world’s largest DDS supplier and Connext is the most trusted software framework for critical systems.

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RTI provides a broad range of technical and high-level resources designed to assist in understanding industry applications, the RTI Connext product line and its underlying data-centric technology.


RTI is the infrastructure software company for smart-world systems. The company’s RTI Connext product is the world's leading software framework for intelligent distributed systems.

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Connext Releases


RTI's software release model offers support and stability, as well as agility to meet rapidly evolving customer and market needs.

The bi-yearly Long-Term Support (LTS) release provides a production-ready platform with long-term support. Between LTS versions, RTI publishes feature releases of Connext to deliver new functionality every six months.

Connext feature releases follow the same rigorous testing as our LTS releases, but also deliver new, cutting-edge features and capabilities that enable new use cases and help transform markets. New features and capabilities transition to LTS releases once they have a stable definition and interface. LTS releases are supported for seven years (with an option for extended maintenance an support). Feature releases are supported for seven months and are not subject to maintenance, after which we focus primarily on supporting subsequent feature and LTS releases.

Typical Release and Support Schedule


Release Model Benefits

Our release model not only enables RTI to deliver exceptional support in the most effective and efficient manner as we and our customers grow, but also enhances the value of our entire product suite. Benefits include:

  • Empowerment of the community, business and developers to plan their production roadmaps with confidence and peace of mind
  • Proactive security updates through dedicated customer channel
  • Continual and incremental rigorous software testing
  • LTS release-specific:
    • Highest level of stability for application deployment
    • Planned updates for security and stability improvements
    • New features transitioned from feature releases
    • 7 years of support
    • Extended maintenance and support available
  • Feature release-specific:
    • New, cutting-edge features delivered to customers frequently
    • 7 months of support

This release model, launched in Q3 2022, applied to Connext 6.1 LTS and later. For information on maintenance and support for previous releases and how RTI’s release model could benefit your program, contact your local Field Application Engineer or send your questions to


Maintenance Releases and Security Updates

For each Connext Long Term Support (LTS) release, RTI maintains the software packages and provides security updates, for a period of twelve years. The lifecycle consists of (1) the standard seven-year maintenance period, during which maintenance updates are available with a  Connext Developer Subscription, and (2) five years of Extended Maintenance (EM).


Connext platform support is dependent on availability and maintenance status determined by the platform vendor. To request new platforms for existing or future maintenance releases, please contact your account team. At RTI, we provide cumulative patches rather than custom ones that only address specific issues reported by customers. Additionally, our patches are designed to be applied on top of the latest Maintenance Release to ensure the most up-to-date and comprehensive fixes are included. 

RTI proactively provides security updates to its customers based on its vulnerability policy, and informs them through a dedicated channel to mitigate any risk exposure. To join or be removed from the Security Notice Program, email

Customers of RTI can ask for an extended maintenance commitment beyond the extended Maintenance package. Contact us for more information.