Roadmap

Version 2.6

Objectives & Key Results

• Ensure Long Term Support including key dependencies
  • Upgrade to Java 17 LTS
  • Upgrade to Jakarta EE 9, Jetty 12 and Spring 6.2
  • Upgrade to GWT 2.12
• Embrace latest HTTP innovations
  • Support HTTP/2 and HTTP/3, server-side and client-side, via Jetty
  • Support RFC 7578 for multipart representations, server-side and client-side, via Jetty
• Facilitate maintenance and community contributions
  • Move examples to dedicated repository easier to clone for users
  • Refactoring unit tests to follow Maven organization (test in each module)

Milestone 1 (end of January)

• Move from javax.* to jakarta.* packages
• Upgrade to Jetty 12 and rely on standalone core API only (see this issue)
• Upgrade to Spring 6.2 (Jakarta Servlet)
• Remove deprecated NIO, WebDAV, SDC, SIP support
• Remove deprecated Apache FileUpload, GAE, Apache HTTP Client, OSGi and RDF extensions
• Deprecate extensions for removal in V2.7/3.0 (Atom, Guice, GWT, JAXB, OData and Servlet)
• Update version numbers in Engine class
• Upgrade to GWT 2.12 (Jakarta Servlet)
• Deliver 2.6 M1 to Maven Central

Release Candidate 1 (early February)

• Deprecate GWT edition for removal in V2.7/3.0
• Update version numbers in Engine class
• Offer support for Multipart representations via Jetty
• Fix Chunked*Test cases
• Deliver 2.6 RC1 to Maven Central

GA (end of February)

• Update version numbers in Engine class
• Upgrade documentation
• Deliver 2.6.0 to Maven Central

Version 2.7

Objectives & Key Results

• Bridge from version 2.6 to version 3.0
  • Remove features deprecated in 2.6
    • Extensions Atom, Guice, GWT, JAXB, OData and Servlet
    • Edition GWT
  • Consider upgrade to Java 21 LTS only if this helps the transition to Java 25 LTS planned for RF V3.0
  • Port changes on Qlik’s internal branch back to the OSS code base
  • Retrofit as much as possible Restlet API changes from version 3.0
• Embrace latest OAS innovations
  • OAS 3.1 support with dynamic code-first descriptions
    • Retrofit previous Swagger extension
  • Integrate with Swagger Codegen to generate Restlet code
    • Organize OSS contribution
• Simplify user documentation
  • Remove notion of edition for navigation

Version 3.0

Objectives & Key Results

• Enable MACH architecture
  • Embrace Microservices, API-first, Cloud-native, Headless
  • Support deployments to Kubernetes with Istio and Knative
  • REST & Protobuf converter as alternative to gRPC
• Embrace latest Java innovations
  • Upgrade to Java 25 LTS
  • GraalVM for reduced startup time
  • Virtual threads for improved scalability
  • HTTPS virtual hosting via SNI
• Reboot web site and documentation
  • Brand new website on https://restlet.org
  • Further embrace GitHub for project management