[0.16.16] - 2026-08-02

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

• JMAP Email Delivery Push Notifications (draft-ietf-jmap-emailpush-03)
• MTA: Allow System Sieve scripts to access orcpt during the DATA stage.

Changed

• S3: accessKey can now be read from an environment variable or file.

Fixed

• Meilisearch: Verify index existence using GET instead of creating a new task which times out on busy servers.
• Branding: Stalwart logo flashes before the per-tenant logo is loaded on the login page.
• Calendar: iMIP and alarm notification messages embed the default logo using bare LF line endings, producing a single 4247 octet line that strict SMTP relays reject with line too long.
• DMARC: Failure reports state Identity-Alignment: none when a mechanism authenticated successfully but against an identity that is not aligned with the From domain.
• Redis: Task and queue locks are never released after a worker dies, because failed lock attempts refresh the lock expiry.
• Recovery mode: Download WebUI if missing.
• Logging: The systemd journal tracer omits the parent span's fields.
• MTA:
  • BDAT chunks sent without a valid MAIL FROM are answered with 552 5.3.4 Message too big for system instead of 503 5.5.1.
  • A maxMessageSize of 0 rejects every message with 552 5.3.4 Message too big for system instead of disabling the size limit.
• Windows: Listeners bound to the unspecified IPv6 address ([::]), including all defaults, refuse IPv4 connections such as 127.0.0.1, since IPV6_V6ONLY is enabled by default on Windows.

Check binary attestation here

0.5.4 (2026-08-02)

• Improved: [#26560] [Plugin] Scripts can now be used to trigger saving a game (limited to the user save folder).
• Improved: [#26638] Guests will no longer watch rides while they’re underground.
• Improved: [#26747] Exporting a sprite file now also outputs a JSON file, allowing for round-trip conversions.
• Improved: [#26763] The ride colour/appearance tab now visually separates fields using group boxes.
• Improved: [#26765] The ride operations tab now visually separates fields using group boxes.
• Improved: [#26839] Magnify picked-up peeps when viewport is in double or quadruple zoom.
• Fix: [#26288] Land bordering map edges does not blend at certain angles.
• Fix: [#26610] Player list is not updated automatically when a player joins or leaves.
• Fix: [#26639] Handymen could begin a task while another handyman was already doing the exact same task.
• Fix: [#26752] The Cut-away View window doesn’t display negative height values correctly on some platforms.
• Fix: [#26756] Guests cannot puke or litter on sloped path.
• Fix: [#26758] [Plugin] IPv6 addresses are reported incorrectly.
• Fix: [#26775] Maze gets wrong intensity boost from size (0.02 per tile instead of 0.01 per 2 tiles).
• Fix: [#26805] Park entrance path is sometimes invisible when placed.
• Fix: [#26826] Invalid ride types can be set when the “Allow arbitrary ride type changes” cheat is enabled.
• Fix: [#26842] Best staff award doesn’t need one of each staff type.

Release created in https://github.com/OpenRCT2/OpenRCT2/actions/runs/30744228503

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