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Release Notes for JMRI 4.24 release

Date: July 9, 2021 [Update 24 Oct 2021]

From: Bob Jacobsen

Subject: Test Release 4.24 of JMRI/DecoderPro is available for download.

We are very pleased to announce that the 4.23 series of JMRI test releases has resulted in a version that's good enough to be recommended for general use, including by new users. We're therefore making that version, "Production Release 4.24" available for download today.

Notes:

JMRI is now only available under the GNU General Public License. For more information, please see our copyright and licensing page.

Update From Older JMRI Versions

If you are currently using a version older than JMRI 4.20, please follow these instructions carefully:
  1. Is your current version older than JMRI 4.12? If so, then update to JMRI 4.12 first, and ensure everything works correctly: check start-up, check things you need to be working, and check the JMRI log as well) before doing anything else. Store your configuration and panel files under a new name and use those from now on. Then continue with step 2.

    If you are currently using JMRI 4.7.3 or earlier on Linux or macOS (Windows doesn't need this), then it's very important that you update to JMRI 4.12 and carrying out the migration process described in the JMRI 4.12 release note before updating to any later relese.

  2. Is your current version older than JMRI 4.20? Then update to JMRI 4.20 first, and ensure that works correctly (check start-up, check things you need to be working, and check the JMRI log as well) before doing anything else Store your configuration and panel files under a new name and use those from now on.
  3. You can then install this release.
Following this multi-step order of updating via stable major releases safeguards you against possible migration issues that can arise from skipping these versions.

Known problems with this release

New warnings for this release:

Older warnings

See the JMRI 4.20 release note for more warnings predating the 4.21 development series, including pointers to various migration issues. These may be relevant to you if you're updating from an earlier version; we strongly recommend you update to JMRI 4.20 installing this test release.

Download links:

Changes since production release 4.22:

This production version is made from test releases 4.23.1 through 4.23.8. The full list of changes in those is available from our code repository.

Hardware Support

CBUS

DCC++ and DCC-EX

LocoNet

MQTT

OpenLCB / LCC

SPROG

Uhlenbrock Intellibox

New / Updated decoder definitions

Doehler & Haas

ESU

LDH

PIKO

TAMS

Tam Valley Depot

ZIMO

Control Panel Editor

CTC Tool

Dispatcher

Layout Editor

NX - Entry/Exit Tool

LogixNG

PanelPro

Preferences

Roster

Scripting

Signals

Signal Systems

Cab Signals

Simple Signal Logic

Throttle

Turnouts, Lights, Sensors and other elements

Virtual Sound Decoder

Where Used

Miscellaneous