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The Pharo project announced Pharo 14 on October 26, 2026, with updates to its development tools, refactoring and command infrastructure, and virtual machine. The project says the release integrates 978 pull requests and is the first under a new fall release schedule.
The Pharo project released Pharo 14 on October 26, adding a revamped set of development tools, expanded command-line capabilities and updates to the language’s virtual machine. The release is also the first under Pharo’s new fall schedule, replacing the previous spring release window, according to the project’s announcement.
The project grouped the work into three areas: modernizing development tools, rebuilding refactoring and command infrastructure, and updating the virtual machine. Tool changes include Mission Control, Pulse — described as a replacement for Spotter — and reworked or rewritten Method Browser and Settings Browser tools. Epicea and ProfStef were also moved into NewTools as Pharo continues migrating development tools to its Spec-based tooling stack.
For command and refactoring workflows, the announcement says refactoring commands moved to a driver-based architecture operating behind a unified command registry. Other additions include command-line testing, a command-line debugger and Sindarin script tooling. The release also includes changes to testing and code-editing tools, along with fixes and work on browsers, windows, text, graphics and other parts of the environment.
VM work includes unified frame and stack management, RISC-V JIT support, memory-management changes such as direct old-space allocation, and garbage-collection improvements. The project also reports extensive compiler and Slang/C translation work, plus updates to cross-platform builds and continuous integration. These are project-reported release highlights; the announcement does not provide comparative performance measurements.
A Broader Toolchain and VM Update
Pharo 14 matters to developers because its changes span both the environment used to write and inspect code and the runtime that executes it. The updated browsers and command infrastructure may affect routine development work, while VM and memory-management changes reach further into platform support and execution. RISC-V JIT support adds a new architecture to the VM’s stated coverage, although the announcement does not detail supported hardware configurations or performance results.
The shift to a fall release window also changes how users should interpret the project’s release cadence. Pharo says it previously released in spring, between March and May, and will now target September through November. That sets a different expectation for when users might see subsequent major versions, but the announcement does not give a fixed annual release date.
The breadth of the work is reflected in the project’s own contribution figures: it says 978 pull requests were integrated in the Pharo repository and 616 issues were closed since Pharo 13. Those numbers describe activity reported by the project, not a measure of adoption or quality. Users evaluating an upgrade will need to consult the release documentation and test their own applications against the new version.
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From Pharo 13 to the Fall Cycle
Pharo describes itself as a pure object-oriented programming language and development environment built around objects and messages. Its project announcement emphasizes a live workflow for developing, testing and debugging, alongside an interactive debugger that can step through execution and restart methods. The release page also says the full stack is open source under the MIT License and points users to GitHub and project documentation.
Pharo 14 follows Pharo 13 and marks a change in release timing: the project says its schedule has moved from spring (March–May) to fall (September–November). The announcement lists related projects included in releases, including NewTools, Spec, Iceberg, Roassal, Microdown, BeautifulComments and the Pharo VM. The repository statistics given for the Pharo project are 432 forks and 1,494 GitHub stars at the time of the announcement; they are a snapshot, not a measure of the entire contributor community.
““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 project announcement
Upgrade Effects Still Need Testing
The release announcement does not specify a precise date for the next Pharo release, beyond the new September–November window. It also does not provide benchmark results, detailed compatibility guidance, or a full account of how the changes affect existing applications and packages. The listed VM work and tool updates are project-reported features; their practical effects will depend on users’ systems and workflows.
The page refers users to download and documentation resources but does not set out a migration checklist or identify known breaking changes in the material provided. It is also unclear from the announcement which RISC-V configurations are supported or how the new JIT support compares with other Pharo VM targets.
Downloads and Release Documentation
Users can obtain Pharo 14 through the project’s download page and consult its documentation for release and usage information. Developers considering an upgrade can check the detailed release notes and test their applications, packages and deployment processes against the new version. The project’s stated fall window provides the schedule for future releases, but no specific date for the next version was announced.
Key Questions
When was Pharo 14 released?
The Pharo project announced the release on October 26, 2026.
What are the main changes in Pharo 14?
The project highlights updated development tools, a redesigned refactoring and command infrastructure, and virtual-machine work including RISC-V JIT support and memory-management changes.
What is Pulse in Pharo 14?
The project describes Pulse as the replacement for Spotter, as part of the release’s development-tool updates.
Has Pharo changed its release schedule?
Yes. The project says it moved from a spring 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 or compatibility data?
No comparative performance benchmarks or detailed compatibility guidance are included in the announcement. Users should consult the project’s release documentation and test their own applications before upgrading.
Source: pharo.org
