Learn what's new across releases, with details of features, enhancements, and resolved issues.
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Progress ThemeBuilder - August 2026Aug 12, 2026
Features
Added support for Q3 2026 Kendo UI components.
Fixes
System variable types are now correctly preserved and re-resolved during migration when a variable's type changes between versions.
'oklch' color variables now export accurately across all supported formats.
Migration from Q4 2025 to Q2 2026 now completes successfully - a selector parsing edge case that caused failures has been resolved.
Corrupted CSS property selectors are automatically detected and repaired during migration, preventing broken theme output.
Theme migration is now safeguarded against exponential processing caused by overly complex override class combinations.
Progress ThemeBuilder - May 2026May 20, 2026
Features
Added support for the new Meridian theme.
Added automatic variable values.
Added support for Q2 2026 Kendo UI components.
Deprecated old versions of Kendo UI components.
Fixes
Fixed issue where CSS rules for Kendo Cоmponent like DropDownList are always generated for k-animation-container-shown.
Fixed issue where interacting with the Form component in Q1 26 breaks the ThemeBuilder application.
Progress ThemeBuilder - April 2026Apr 8, 2026
Features
Breaking Changes:
Versions R3 2022, R1 2023, R2 2023, and R3 2023 are no longer supported. Existing projects using these versions will be automatically migrated to the latest supported version upon opening.
Creating new projects with deprecated versions is no longer possible.
Progress ThemeBuilder - February 2026Major versionFeb 11, 2026
Features
Enhanced support for configurations of all Kendo UI components.
Extended component part and state customization.
Added support for 2026 Q1 Kendo UI components.
Fixes
Fixed issue where color variables for Q2, Q3, Q4 2024 are not applied.