📦 Downloads available at

• https://user.bitfocus.io/download

💵 Donate to the project at

• open collective https://opencollective.com/companion

Companion v5.1.0 - Release Notes

📣 CORE FEATURES AND IMPROVEMENTS

• Graphics improvements

  • pinned properties for quicker access to commonly used properties in the style editor #4324 (#4442)
  • wysiwyg toolbar for basic edits to a button's style (#4341)
  • better custom preview aspect ratios (#4450)
  • surface gauge leds (#4314)
  • show expression value previews for elements and style overrides
  • add fill width setting and alpha support for fill colors #4359
  • allow value feedbacks as layered-button style overrides (#4379)
  • make button preview aspect entry more robust and more flexible
  • text style properties (#4337)
  • smooth text autosizing
  • support corner radius for box elements #4359
  • allow rotating composite elements

• Misc UX

  • rework button grid interactions (#4434)
  • support alt+click on CollapsibleTree nodes to expand all at that level
  • make split panel layouts resizable #2781
  • Show local variable value when collapsed (#4386)
  • configurable default export format #4349
  • make module deprecation more visible to users (#4495)

• APIs

  • Prototype of new full system REST API (#4259)
  • REST API to list surfaces and set brightness (#4405)
  • REST API token management (#4453)

• Expressions

  • new maths functions (#4388)
  • expression oscillator function (#4328)

• Variables

  • Local Variables on pages (#4332)
  • expose $(this:delta) for rotary actions and carry rotation amount (#4387)

• Controls

  • reference/mirror control type (#4339)
  • linked presets (#4284)

• Misc

  • lazily evaluate internal feedbacks that are children of an action (#4378)
  • Add milliseconds to log entries #2891
  • add COMPANION_INSTALL_NAME env var to set the installation name
  • prometheus metrics for monitoring (#4304)
  • streaming json parsing/generation (#4390)
  • report collection-disabled connections as disabled, add connection collection status variables #4479
  • add 'Surface: When connected' feedback #4124
  • randomInt() is not re-evaluated in Trigger conditions #3297
  • Add duration to press and release internal action #3389
  • add $(internal:date_monthname) variable #3819

🐞 BUG FIXES

• module versions refresh button not indicating progress
• keep unicode glyphs together when breaking a line #3671
• rework line breaking to work as is was long ago (#4372)
• font size scaling not always consider whether topbar is visible
• keep preset definition ids stable across re-conversion
• surface page-change defer condition and rescanUsb error reporting
• propagate image import errors #4438
• better report import progress to the ui
• sort to the connection selection dropdown (#4402)
• backup file renaming failing #4394
• try to ensure module are shutdown cleanly when companion exits
• adjust line draw bounds to not hide the line #4359
• measure font ascent/descent for better positioning #4359
• avoid excessive button-drawn events upon a cache hit
• colors when downscaling oversampled images
• dropdown freezing when selecting from a large list #4494
• expose pressed state to surfaces
• don't recreate desktop shortcut when updating
• static-text fields should not show expression toggles
• draw a placeholder for missing or cyclic composite elements
• update bonjour lib to limit query answer rate #4499
• logging stopping entirely after a non-string message is logged #4509

Full Changelog: v5.0.7...v5.1.0

[0.16.26] - 2026-10-11

If you are upgrading from v0.16.x, replace the binary (or run docker pull). If you are upgrading from v0.15.x and below, please read the upgrading documentation for more information on how to upgrade from previous versions.

Added

• sd_notify support.
• JMAP: Mailbox/set allows moving a mailbox under a parent that already has a child with the same name, and rejects renames that only change the case of a mailbox name with alreadyExists.

Changed

Fixed

• DNSSEC: Use hickory-resolver patched fork at https://github.com/stalwartlabs/hickory-dns.
• RocksDB: Blob garbage collection rewrites every stored blob on each compaction of the blobs column family, about once per 128MB of new mail.
• Milter: End-of-headers is not sent to milters that negotiate SMFIP_NOHDRS without SMFIP_NOEOH, so the transaction stalls until it times out.
• OIDC: When the access token lacks the claimUsername claim but has an email claim, the account is built from email without consulting the userinfo endpoint.
• JMAP:
  • onSuccessUpdateEmail and onSuccessDestroyEmail entries in EmailSubmission/set that name an existing submission by id update or destroy the Email with the same id instead of the submission's own Email.
  • A VacationResponse/set that only sets isEnabled on an account without a vacation response activates an empty Sieve script.

Check binary attestation here