Release History

Telerik UI for WPF 2025.4.1321

January 21, 2026

What's New

NEW

• New RadSpeechToTextButton control which provides out-of-the-box speech recognition functionality. Supports continuous or single-shot recognition, different languages and custom recognizers.

Common

NEW

• Full support for dynamic localization. Now the feature covers all controls in the WPF suite.

FIXED

• The licensing watermark is displayed over the Visual Studio application when a Telerik WPF control is hosted in the designer of a WinForms project.

CHANGED

• Starting with upcoming Q2 2026 releases, the following legacy themes will no longer be supported for new controls: Expression Dark, Windows 7, Transparent, Vista, Summer, Office Silver and Office Blue. Support for existing controls in these themes will remain unchanged.

Dependencies

• Telerik Document Processing Library (DPL) version updated to 2025.4.1319.
• Minimum required Telerik Licensing version updated to 1.6.36.

Buttons

NEW

• New RadSpeechToTextButton control which provides out-of-the-box speech recognition functionality. Supports continuous or single-shot recognition, different languages and custom recognizers.

DateRangePicker

FIXED

• An exception is raised when pasting strings containing non-digit chars.

FileDialogs

FIXED

• Wildcard pattern *file.txt does not match files like samplefile.txt.

Menu

FIXED

• Hovering the mouse over a RadMenuItem does not highlight the arrow button.

OfficeNavigationBar

FIXED

• An exception is raised when loading the control with the Office2013 theme applied via merging the Generic dictionary.

PersistenceFramework

FIXED

• An exception is raised when saving the layout in .NET 10 if there is a Grid with ColumnDefinition/RowDefinition objects.

RichTextBox

NEW

• Support for customizing hyperlink tooltips.
• Improved keyboard selection behavior in tables with arrow keys to match MS Word.

FIXED

• The current editing style is not preserved when the document layout is refreshed.

Breaking Changes

• Several existing methods in the KeyboardSelectionHandler class have been modified as detailed below: ExpandTopRight is removed; use the MoveActiveEnd method instead. ExpandDownLeft is removed: use the MoveActiveEnd method instead. UpdateSelection is removed; use the MoveActiveEnd method instead.