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Release Notes for JMRI 5.0 release

Date: June 21, 2022

From: Bob Jacobsen

Subject: Production Release 5.0 of JMRI/DecoderPro is available for download.

We are very pleased to announce that the 4.99 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 5.0" 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.


This release requires Java 11 to work.
(See our page on downloading and installing Java 11)


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. Save your preferences again. 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.

New problems with this release

New warnings for this production release:

See the JMRI 4.20 release note for more warnings predating the 4.99 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 before installing this release.

Download links:

Changes since production release 4.26:

This production version is made from test releases 4.99.1 through 4.99.10 The list of changes in those is available from our code repository.

Hardware Support

C/MRI

CBUS

DCC4pc

DCC++ and DCC-EX

KPF-Zeller

LocoNet

MERG

MQTT

OpenLCB / LCC

SPROG

TMCC

Uhlenbrock Intellibox

New / Updated decoder definitions

Digitrax

Doehler & Haas

ESU

Massoth

MD Electronics

SoundTraxx

Tam Valley Depot

ZIMO

DecoderPro

Dispatcher

Internationalization

Layout Editor

Logix

LogixNG

Operations

Panel Editor

Control Panel Editor

Preferences

Resources

RFID

Routes

Scripting

Signals

Signal Systems

Signal Masts

Simple Signal Logic

Switchboard Editor

Timetable

Throttle

Turnouts, Lights, Sensors and other elements

Virtual Sound Decoder

Warrants

WiThrottle Server

Web Access

Web Server

Miscellaneous