TinyMCE 8.9.0

These are the Tiny Cloud and TinyMCE Enterprise release notes. For information on the latest community version of TinyMCE, see the TinyMCE Changelog.

Overview

TinyMCE 8.9.0 was released for TinyMCE Enterprise and Tiny Cloud on Wednesday, August 26th, 2026. These release notes provide an overview of the changes for TinyMCE 8.9.0, including:

[[new-premium-plugin<s>]] == New Premium plugin<s>

The following new Premium plugin was released alongside TinyMCE 8.9.0.

<Premium plugin name>

The new Premium plugin, <Premium plugin name> // description here.

For information on the <Premium plugin name> plugin, see xref:<plugincode>.adoc[<Premium plugin name>].

New Open Source plugin

The following new Open Source plugin was released alongside TinyMCE 8.9.0.

<Open source plugin name>

The new open source plugin, <Open source plugin name> // description here.

For information on the <Open source plugin name> plugin, see xref:<plugincode>.adoc[<Open source plugin name>].

Accompanying Premium plugin changes

The following premium plugin updates were released alongside TinyMCE 8.9.0.

<Premium plugin name 1> <Premium plugin name 1 version>

The TinyMCE 8.9.0 release includes an accompanying release of the <Premium plugin name 1> premium plugin.

<Premium plugin name 1> <Premium plugin name 1 version> includes the following <fixes, changes, improvements>.

<Premium plugin name 1 change 1>

For information on the <Premium plugin name 1> plugin, see: xref:<plugincode>.adoc[<Premium plugin name 1>].

TinyMCE AI

The TinyMCE 8.9.0 release includes an accompanying release of the TinyMCE AI premium plugin.

TinyMCE AI includes the following addition.

The tinymceai_chat_fetch_sources option can now nominate default sources for chat conversations.

Previously, the TinyMCE AI plugin applied only the current document to the context of a new AI Chat conversation. Users had to add every other context source, such as a style guide or a reference document, to each new conversation by hand.

In TinyMCE 8.9.0, the function supplied to tinymceai_chat_fetch_sources can resolve to an object with a menu property, holding the source groups shown in the sources menu, and a defaults property, holding an array of source identifiers. The plugin adds each source listed in defaults to the context of every new conversation, and shows it as selected in the sources menu. Users can remove a default source from a conversation and add it again from the sources menu.

Identifiers listed in defaults without a matching source in menu.sources are not added to the context, and the plugin reports them as an error in the browser console.

The option continues to accept a function that resolves to an array of source groups, so existing configurations are unaffected.

For details on configuring conversation context, see Adding custom context sources.

For information on the TinyMCE AI plugin, see: TinyMCE AI.

Accompanying Premium plugin end-of-life announcement

The following Premium plugin has been announced as reaching its end-of-life:

<Premium plugin name eol>

TinyMCE’s xref:<plugincode>.adoc[<Premium plugin name eol>] plugin will be deactivated on <month> <DD>, <YYYY>, and is no longer available for purchase.

Accompanying open source plugin end-of-life announcement

The following open source plugin has been announced as reaching its end-of-life:

<Open source plugin name eol>

TinyMCE’s xref:<plugincode>.adoc[<Open source plugin name eol>] plugin will be deactivated on <month> <DD>, <YYYY>, and is no longer available for purchase.

Accompanying Enhanced Skins & Icon Packs changes

The TinyMCE 8.9.0 release includes an accompanying release of the Enhanced Skins & Icon Packs.

Enhanced Skins & Icon Packs

The Enhanced Skins & Icon Packs release includes the following updates:

The Enhanced Skins & Icon Packs were rebuilt to pull in the changes also incorporated into the default TinyMCE 8.9.0 skin, Oxide.

For information on using Enhanced Skins & Icon Packs, see: Enhanced Skins & Icon Packs.

Improvements

TinyMCE 8.9.0 also includes the following improvement<s>:

<TINY-vwxyz 1 changelog entry>

Additions

TinyMCE 8.9.0 also includes the following addition<s>:

<TINY-vwxyz 1 changelog entry>

Changes

TinyMCE 8.9.0 also includes the following change<s>:

<TINY-vwxyz 1 changelog entry>

Removed

TinyMCE 8.9.0 also includes the following removal<s>:

<TINY-vwxyz 1 changelog entry>

Bug fixes

TinyMCE 8.9.0 also includes the following bug fix<es>:

<TINY-vwxyz 1 changelog entry>

Security fixes

TinyMCE 8.9.0 includes <a fix | fixes for the following security issue<s>:

<TINY-vwxyz 1 changelog entry>

Deprecated

TinyMCE 8.9.0 includes the following deprecation<s>:

The <plugin> configuration property, <name>, has been deprecated

Known issues

This section describes issues that users of TinyMCE 8.9.0 may encounter and possible workarounds for these issues.

There <is one | are <number> known issue<s> in TinyMCE 8.9.0.

<TINY-vwxyz 1 changelog entry>