New release candidate: 1.11.0rc1

Welcome to 2025, I hope you arrived safe and sound in this year! Today I’m happy to present to you the first release candidate of the upcoming 1.11.0 release.

As always with a new minor version that brings not only bug and security fixes but also improvements and whole new features, the changelog has grown quite large, so I’m not going to include it here in full.

But let’s still take a look at some of the highlights, shall we?

• OctoPrint now has a full fledged Upload Manager plugin bundled! It allows easy management of your uploaded files, including bulk copying, moving and removing as well as renaming, slicing, uploading to your printer etc. This new bundled plugin replaces the sadly no longer maintained File Manager plugin by Marc Hannapel with a new UI and UX and updated logic.
• Another popular but no longer mainted plugin by Marc, the Custom Control Editor, has also been revamped as the bundled Custom Control Manager which now provides you with a built-in UI to quickly create and manage your own custom controls that will be shown on the Control tab. A core feature since the first versions of OctoPrint over a decade ago, it was time to give this full UI configuration support in core!
• For the security conscious people out there it will be some good news to hear that there’s now support for adding Two-Factor Authentication through plugins, and a first plugin supporting TOTP has already been made available on the official plugin repository!

• A new Health Check Plugin will will alert you of any issues with your runtime environment and OctoPrint installation. For now, it checks the following things:

  • sufficient file system storage across all configured data folders
  • OctoPrint’s version not being more than two minor versions behind
  • Python version not being EOL or close to EOL

  Health checks are kept as unobstrusive as possible in the shape of a little navbar icon. Only high priority issues will cause a popup. Currently that only involves Python versions that are already EOL, and those will only be shown every 30 days (per browser, by the use of a browser cookie).

  Additional health checks can be added by plugins through the octoprint.plugin.health_check.get_additional_checks hook.

  A forthcoming update of the bundled PiSupport Plugin adds the results of the throttle check, model support and default password use to the set of health checks.

• As there are some hardware webcams out there that require authentication credentials, OctoPrint now supports configuring Basic, Digest or Bearer Token based credentials for the webcam snapshot URL.
• An way less intrusive reload popup has been added that replaces the modal reload overlay on plugin/settings changes and should cause less annoyance. Add
• Similar as other software out there, OctoPrint now will show you a heads-up about the risks of Third Party Plugins when you try to install one for the first time. This is not to scare you away from using Third Party Plugins in any way, but given that in theory someone could write a malicious one, we figured it might be a good idea to tell you about the risks and what we do to reduce them.
• In the plugin repository browser built into the Plugin Manager, OctoPrint will now also allow you to filter out abandoned plugins and will also show you whether a plugin is commercial (and if so whether it has a free tier) and whether it requires some kind of cloud access. We want you to be able to make an informed decision on whether to install such plugins right from within the repository browser, without having to navigate to the official plugin repository.
• OctoPrint now supports Python 3.13.
• Several bugs have been fixed, including the offset of the chamber temperature not being properly applied, logging of exceptions on the WSGI layer, error reporting in case of upload issues, a bug that caused the reload overlay to show way more often than actually necessary, and more.
• … and plenty other things!

Please also take a look at the following heads-ups:

Heads-up: OctoPrint 1.11.x is the last OctoPrint to support Python 3.7 and 3.8

Python 3.7 has now been EOL since June 27th 2023, and the maintenance overhead caused by still having to support it is becoming unfeasible. Python 3.8 has now been EOL since October 31st 2024, and it is to be expected that the maintenance overhead will further rise due to that.

As a consequence, OctoPrint 1.11.x is the final OctoPrint version to support both Python 3.7 and 3.8. OctoPrint 1.12.0+ will require at least Python 3.9.

How do you know if you will be affected and need to update? A newly added healthcheck mechanism has been added that will now alert you if your environment is outdated and about to be left behind, an a new FAQ entry is in place to help you figure out how to update your runtime environment.

This will be kept updated, so that you will also receive early warnings about future deprecations this way.

Heads-up: OctoPrint will now auto-escape all internal templates, plugin authors should opt-in as well!

Starting with OctoPrint 1.11.0, OctoPrint will ship with auto-escaping all injected template variables and other included expressions in its template system. For 1.11.0 and 1.12.0, this will only be done for bundled plugins and those third party plugins that have opted into autoescaping. Starting with OctoPrint 1.13.0 however, third party plugins will have to opt out in order to not have autoescaping enabled on their templates.

A new entry has been added to the FAQ that has further details.

Heads-up: `WebcamProviderPlugin.take_webcam_snapshot` has gotten its parameters fixed

If you are the maintainer of a third party plugin using the WebcamProviderPlugin mixin and have implemented its take_snapshot method, be advised that an implementation error in OctoPrint has been fixed and the implementation aligned with the documentation: the method will now be called with the webcamName parameter being a string containing the name of the requested webcam, as documented, not a full webcam configuration object as previously wrongly implemented.

You can find the full changelog and release notes as usual on GitHub.

Special thanks to everyone who contributed to this release candidate and provided full, analyzable bug reports, you help making the next release as stable as possible! And of course also thank you to everyone who helped fund the development that went into this release candidate!

A special Thank You! to these 13 fine people for their PRs, and an extra warm welcome to our 10 first-time contributors! 🎉

@ccatlett1984

@cp2004

@dawidpieper

@endrift

@its-leofisher

@jacopotediosi

@jneilliii

@MaienM

@nmschulte

@ofoxus

@WildRikku

@WisdomCode

@zaventh

As the past RCs have shown me that a lot of people appear to be unaware of this: Please do not install this RC if you expect a fully stable version. It is not a stable release, it is a release candidate: severe bugs may occur, and they might be bad enough that they make a manual downgrade to an earlier version necessary - maybe even from the command line.

You should feel comfortable with and capable of possibly having to do this before installing an RC.

If you want to and can help test this release candidate, you can find information on how to switch to the "Maintenance RCs" release channel in this guide if not already done (also linked below).

Please provide feedback on this RC. For general feedback you can use this ticket on the tracker. The information that everything works fine for you is also valuable feedback 😄. For bug reports please follow How to file a bug report - I need logs and reproduction steps to fix issues, not just the information that something doesn't work so make sure to fill out all fields of the issue template.

While testing the release candidate, please take a closer look at these things:

• Proper behaviour when using the included web interface as well as any third party clients at your disposal.

• The newly added Custom Control Manager plugin.

• The newly added Health Check plugin.

• The newly added Upload Manager plugin.

• The MFA-TOTP plugin using the new MFA plugin interface.

• Timelapse creation, especially with a configured rendering delay.

Thanks!

Depending on the feedback regarding this version I'll look into fixing any observed regressions and bugs and pushing out a follow-up version as soon as possible and necessary.

Links

• Ticket for general feedback
• Changelog and Release Notes
• FAQ entry "My OctoPrint update fails" (Read in case of any update problems!)
• How to use release channels to help test release candidate
• How to file a bug report
• Contribution Guidelines (also relevant for creating bug reports!)
• FAQ
• Documentation
• How to roll back to an earlier release (OctoPi)
• How to roll back to an earlier release (manual install)

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