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The Pharo project announced version 14 on October 26, 2026, with development-tool updates, expanded command-line capabilities and substantial virtual-machine work. The release includes RISC-V JIT support and memory-management changes; the project says 978 pull requests were integrated in the Pharo repository.
The Pharo project released Pharo 14 on October 26, 2026, introducing updated development tools, expanded command-line features and changes to its virtual machine, including RISC-V JIT support. The release is the first under the project’s new fall schedule, moving its annual release window from March–May to September–November.
Pharo’s release announcement says the development-tool work includes Mission Control and Pulse, which replaces Spotter, alongside a reworked Method Browser and a rewritten Settings Browser. Epicea and ProfStef were moved into NewTools. The changes continue the project’s migration of development tools to its Spec-based tooling stack. The announcement also lists improvements to the File Browser, Finder, Transcript, code editing, filtering and window behavior.
Work on refactoring and command infrastructure includes moving refactoring commands to a driver-based architecture and bringing them under a unified command registry. The release adds or extends command-line testing, a command-line debugger and Sindarin script tooling. These changes give developers more ways to run tests and debug from the command line, alongside the visual development environment.
The virtual-machine work includes unified frame and stack management, memory-management and garbage-collection improvements, and additional work on Slang and C compilation. The project also reports cross-platform build updates, changes to continuous integration and updated third-party dependencies. Its release post says 978 pull requests were integrated in the Pharo repository and 616 issues were closed since Pharo 13; those figures cover the Pharo repository, not every separate project included in a release.
New Tools and VM Capabilities
Pharo 14 matters to developers who use the language because its changes reach both the everyday programming environment and the runtime beneath it. The browser and settings updates, along with the move to NewTools and the introduction of Pulse, alter how developers inspect and work with code. The command-line additions also extend testing and debugging beyond the graphical environment.
For platform development, RISC-V JIT support broadens the architectures addressed by the virtual-machine project. The release announcement does not quantify performance gains or describe production readiness for specific RISC-V systems, so the feature should be understood as added support rather than evidence of a particular speed improvement. Memory-management and build-system work may also matter to users and maintainers, though the project does not provide comparative benchmarks in the announcement.
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A Shift to Fall Releases
Pharo describes itself as an open-source, object-oriented language and live development environment. The project emphasizes interactive development, including a debugger that can step through execution and change code during a debugging session. Its announcement says the full stack is released under the MIT License and is available on GitHub.
Pharo 14 is the first release following a change to the project’s timetable: releases previously targeted spring, from March through May, and will now target fall, from September through November. The project says this iteration focused on three broad areas: modernizing tools, rebuilding refactoring and command infrastructure, and modernizing the virtual machine. Pharo 14’s listed work also spans related projects, including Spec, NewTools, Iceberg, Roassal and the Pharo VM.
“In this iteration of Pharo, our efforts have concentrated on three main areas: Modernizing the development tools. Rebuilding the refactoring and command infrastructure. Modernizing the virtual machine.”
— The Pharo team
Performance and Support Details
The release announcement does not provide performance benchmarks, detailed compatibility tables or a full account of which platforms and hardware configurations are covered by the RISC-V JIT support. It also does not specify whether every listed tool change is enabled by default across all distributions or describe upgrade steps for existing installations. The project’s development-effort figures are limited to its Pharo repository, and the post does not give a combined contribution count for the separate projects bundled with releases.
The announcement describes the release’s features and development work, but does not present independent testing or comparative evidence for claimed benefits such as improved execution or memory behavior. Users evaluating those changes will need to consult release documentation and project-specific updates for technical details.
Using Pharo 14
Pharo’s announcement directs users to its download page to try the new version and to its documentation for learning materials. Developers can also review the release highlights and linked project repositories for details on tools and components maintained outside the main Pharo repository. The project has not announced a specific date for its next release in the supplied material; under the new schedule, the stated release window is September–November.
Key Questions
When was Pharo 14 released?
The Pharo team announced the release on October 26, 2026.
What are the main changes in Pharo 14?
The release updates development tools, adds command-line testing and debugging capabilities, and includes virtual-machine changes such as RISC-V JIT support and memory-management work.
What is Pulse in Pharo 14?
According to the release announcement, Pulse replaces Spotter. It is part of a wider set of changes to Pharo’s development tools.
Did Pharo change its release schedule?
Yes. The project says it is moving from a spring release window of March–May to a fall window of September–November. Pharo 14 is the first release under that schedule.
Does the announcement include performance results?
No benchmarks or quantified performance comparisons are included in the supplied release announcement. It lists virtual-machine and memory-management changes but does not measure their effects.
Source: pharo.org
