The Thunderbird team has officially released Thunderbird 156, bringing another round of new features, security improvements, authentication enhancements, and reliability fixes to the popular open-source email client. Released on September 15, 2026, the update is available for Linux alongside Windows and macOS.

Thunderbird 156 is not a dramatic redesign of the desktop mail client. Instead, it concentrates on improving areas that matter to everyday users and system administrators, including OAuth authentication, OpenPGP, POP3, IMAP, Exchange Web Services, SMTP, attachments, calendars, enterprise policies, and security.

For Linux users in particular, the release delivers several fixes affecting common mail protocols and account configurations while retaining support for Linux environments using GTK+ 3.14 or newer.

Thunderbird 156 Arrives on Linux

Thunderbird 156 follows version 154, which arrived in August with features including optional system tray operation and Microsoft Graph support for Microsoft 365.

Version 156 continues the project's monthly release cycle with a more targeted collection of authentication, security, compatibility, and reliability improvements.

According to Thunderbird's official release notes, version 156 requires:

• Linux: GTK+ 3.14 or newer
• Windows: Windows 10 or newer
• macOS: macOS 10.15 or newer

Thunderbird 156 was officially released on September 15.

Linux distribution availability will vary because distributions can package Thunderbird according to their own schedules. Users receiving Thunderbird through another packaging channel may therefore see version 156 at a different time.

Custom OAuth Support Expands

One of the most significant areas of development in Thunderbird 156 is OAuth authentication.

Thunderbird now supports custom OAuth configurations containing an issuer ID and client secret for IMAP and POP3 accounts. Custom OAuth support has also been extended specifically to POP3.

OAuth has become increasingly important as email providers move away from conventional username-and-password authentication toward token-based authentication.

For Thunderbird, broader custom OAuth support means users and organizations have greater flexibility when connecting the client to mail services that don't fit Thunderbird's predefined provider configurations.

This can be particularly useful in enterprise environments, self-hosted infrastructure, and organizations operating their own identity systems.

Exchange Custom OAuth Setup Fixed

Exchange users receive an important related correction.

The KDE Project has officially released KDE Plasma 6.7.5, delivering another round of bug fixes and stability improvements for the Plasma 6.7 desktop series. Released on September 8, 2026, the update contains roughly a month of fixes and updated translations contributed since Plasma 6.7.4 arrived in early August.

Unlike a major Plasma release, version 6.7.5 doesn't introduce a large collection of new desktop features. Instead, KDE has focused on fixing problems affecting Discover, KWin, Wayland, networking, System Monitor, Plasma Desktop, RPM-OSTree systems, Snap updates, HDR rendering, and several other components.

For users already running Plasma 6.7, this makes version 6.7.5 primarily a maintenance upgrade intended to make the desktop more dependable ahead of the next major Plasma series.

KDE Plasma 6.7.5 Arrives as the September Bugfix Release

KDE describes Plasma 6.7.5 as its September bugfix release for the Plasma 6 desktop.

The broader Plasma 6.7 series originally arrived in June 2026, followed by a succession of maintenance releases:

• Plasma 6.7.1 on June 23
• Plasma 6.7.2 on June 30
• Plasma 6.7.3 on July 14
• Plasma 6.7.4 on August 4
• Plasma 6.7.5 on September 8

KDE's official download infrastructure confirms that the Plasma 6.7.5 source packages became available on September 8.

This slower maintenance cadence later in a Plasma series is normal. Once the most urgent post-release problems have been addressed, KDE generally shifts more development attention toward the next feature release while continuing to provide important fixes for the current branch.

Discover Receives Several Important Fixes

KDE's Discover software center receives some of the most noticeable improvements in Plasma 6.7.5.

One particularly annoying problem could cause Discover to become stuck while checking for updates when its Snap backend was installed but no Snap applications actually had updates available.

That problem has now been corrected.

Discover also behaves more reliably when fwupd, the Linux firmware update service, is unavailable. Previously, a broken or intentionally masked fwupd service could interfere with Discover's normal operation. Plasma 6.7.5 allows the rest of the application to continue functioning correctly in that situation.

This is useful for systems where firmware updating isn't supported, where administrators intentionally disable the service, or where fwupd encounters a configuration problem.

Firmware Updates No Longer Incorrectly Require Reboots

Another Discover correction addresses a regression involving firmware updates.

Want to interact with ChatGPT from your Linux desktop without using a web browser?

Bavarder, a new app, allows you to do just that.

Developed with Python and GTK4/libadwaita, Bavarder offers a simple concept: pose a question to ChatGPT, receive a response, and promptly copy the answer (or your inquiry) to the clipboard for pasting elsewhere.

With an incredibly user-friendly interface, you won't require AI expertise (or a novice blogger) to comprehend it. Type your question in the top box, click the blue send button, and wait for a generated response to appear at the bottom. You can edit or modify your message and repeat the process as needed.

During our evaluation, Bavarder employed BAI Chat, a GPT-3.5/ChatGPT API-based chatbot that's free and doesn't require signups or API keys. Future app versions will incorporate support for alternative backends, such as ChatGPT 4 and Hugging Chat, and allow users to input an API key to utilize ChatGPT3.

At present, there's no option to regenerate a response (though you can resend the same question for a potentially different answer). Due to the lack of a "conversation" view, tracking a dialogue or following up on answers can be challenging — but Bavarder excels for rapid-fire questions.

As with any AI, standard disclaimers apply. Responses might seem plausible but could contain inaccurate or false information. Additionally, it's relatively easy to lead these models into irrational loops, like convincing them that 2 + 2 equals 106 — so stay alert!

Overall, Bavarder is an attractive app with a well-defined purpose. If you enjoy ChatGPT and similar technologies, it's worth exploring.

Today, The Document Foundation unveiled the release and widespread availability of LibreOffice 7.5.3, which serves as the third maintenance update to the current LibreOffice 7.5 open-source and complimentary office suite series.

Approximately five weeks after the launch of LibreOffice 7.5.2, LibreOffice 7.5.3 arrives with a new set of bug fixes for those who have successfully updated their GNU/Linux system to the LibreOffice 7.5 series.

LibreOffice 7.5.3 addresses a total of 119 bugs identified by users or uncovered by LibreOffice developers. For a more comprehensive understanding of these bug fixes, consult the RC1 and RC2 changelogs.

You can download LibreOffice 7.5.3 directly from the LibreOffice website or from SourceForge as binary installers for DEB or RPM-based GNU/Linux distributions. A source tarball is also accessible for individuals who prefer to compile the software from sources or for system integrators.

All users operating the LibreOffice 7.5 office suite series should promptly update their installations to the new point release, which will soon appear in the stable software repositories of your GNU/Linux distributions.

In early February 2023, LibreOffice 7.5 debuted as a substantial upgrade to the widely-used open-source office suite, introducing numerous features and improvements. These enhancements encompass major upgrades to dark mode support, new application and MIME-type icons, a refined Single Toolbar UI, enhanced PDF Export, and more.

Seven maintenance updates will support LibreOffice 7.5 until November 30th, 2023. The next point release, LibreOffice 7.5.4, is scheduled for early June and will include additional bug fixes.

The Document Foundation once again emphasizes that the LibreOffice office suite's "Community" edition is maintained by volunteers and members of the Open Source community. For enterprise implementations, they suggest using the LibreOffice Enterprise family of applications from ecosystem partners.