

26.1.2 (9 February 2026)
------------------------


**Performance**

* DVT\-24655 Performance\: Speed\-up incremental elaboration when changing design elements with lots of generates

**REMOVED**

* DVT\-24746 External Tools\: Remove deprecated ${dvt\_path\_to\_signal\_under\_cursor} variable

**Features**

* DVT\-23843 AI Assistant\: Add support for Google Vertex AI provider

**Enhancements**

* DVT\-23907 Waveform Viewer\: Improve presentation of waveform information displayed in tooltips
* DVT\-24047 Schematic Diagrams\: Enhance representation of constants for port connection expressions
* DVT\-24703 Log Viewer\: Ability to make queries without referencing an attribute key from the applicable patterns
* DVT\-24710 Waveform Viewer\: Show signal values at primary cursor time in Tooltip
* DVT\-24717 Waveform Viewer\: Show signal values at primary cursor time in Inspect View
* DVT\-24733 Log Viewer\: New message template for xrun logs
* DVT\-24754 Waveform Viewer\: Double clicking a port in the Signals Panel should jump to its declaration instead of instance connection
* DVT\-24779 Log Viewer\: Add keyboard shortcuts for scrolling

**Bugfixes**

* DVT\-15523 Elaboration\: Add support for 'std\_logic\_arith\.conv\_unsigned' function evaluation
* DVT\-23888 Waveform Viewer\:  Position of a bit in a packed array that does not start from zero is not displayed correctly
* DVT\-24055 Schematic Diagrams\: Indices of positional association should not be shown as constants
* DVT\-24627 & DVT\-24588 & DVT\-24643 Log Viewer\: Graphical artifacts show up in specific scenarios
* DVT\-24649 Waveform Viewer\: Struct signals used in clocking blocks are not represented correctly in the Signals Table
* DVT\-24664 Semantic checks\: False UNDECLARED\_IDENTIFIER error for subprogram call followed by array select and member select
* DVT\-24690 & DVT\-24718 Log Viewer\: Sometimes scrolling does not work as expected
* DVT\-24694 Log Viewer\: Log files become read\-only while opened on Windows
* DVT\-24699 Log Viewer\: Sometimes GB\-sized logs cannot be scrolled to the end
* DVT\-24707 AI Assistant\: Wildcard patterns cannot be used with OpenAI\-compatible models
* DVT\-24711 Waveform Viewer\: Packed array of struct signals  are not represented correctly in the Signals Table after importing a configuration
* DVT\-24712 Waveform Viewer\: Sometimes 'Next/Prev Edge' jumps to incorrect time
* DVT\-24732 Log Viewer\: Sometimes hyperlinks are not available when enabling multiple message templates
* DVT\-24749 Log Viewer\: Sometimes the serialized index is not reused
* DVT\-24750 Waveform Viewer\: Packed arrays of enums are not displayed correctly
* DVT\-24752 AI Assistant\: In some configurations Anthropic models responses are limited to 4096 tokens
* DVT\-24758 Log Viewer\: Unmatched log content is sometimes truncated
* DVT\-24762 Waveform Viewer\: Sometimes enum items are incorrectly displayed
* DVT\-24791 Waveform Viewer\: Exception thrown when parsing an incomplete \.vcd file
* DVT\-24793 Waveform Viewer\: Multibit signal value changes during consecutive refresh actions



26.1.1 (26 January 2026)
------------------------


**HIGHLIGHTS**

-  New :ref:`Log Viewer`:

   -  Handles GB-sized simulation logs
   -  Instant search and filtering of structured messages 
   -  Links with source code and Waveform Viewer

-  New :ref:`Waveform Viewer`:

   -  Add signals (optionally with drivers / loads) directly from the editor, views and diagrams
   -  Jump instantly between waveform and source code (both ways)
   -  View signal values in schematic diagrams, tooltips and the Inspect view

-  AI Assistant:

   -  New 'Agentic' :ref:`chat profile<chat-session-profiles>` with tool calling and improved UX for reviewing changes  
   -  New editor :ref:`Code Completion`
   -  Ability to :ref:`auto-correct compilation errors and warnings<Problem_Auto-correct>`


**NOTEWORTHY**

-  2 New compile checks (1 semantic, 1 elaboration)
-  5 new AI Assistant predefined blueprints
-  6 new AI Assistant snippets

-  :ref:`Schematic diagram improvements<Design Diagrams>`:

   -  New representation of structured datatypes
   -  Show value of signals tied to constants
   -  Show UPF isolation values

-  Improved AI Assistant model configuration:

   -  New Amazon Bedrock provider
   -  Support for proxies, SSL and short-lived tokens

-  Kit distribution updates:

   -  New Linux multiarch kit distributions (x86\_64 & aarch64)
   -  New kit distributions with Eclipse 4\.37
   -  Renamed kit distribution archives and the root folder inside
   -  Deprecated kit distributions with Eclipse 4\.22, will be removed in July 2026
   -  Removed kit distributions with Eclipse 4\.24


.. Note::
  Some of the highlights and noteworthy improvements mentioned above were rolled-out in 25.#.# releases for early adopters.

**REMOVED**

* DVT\-24663 Removed kit distributions with Eclipse 4\.24

**DEPRECATED**

* DVT\-24665 Deprecated kit distributions with Eclipse 4\.22

**CLEANUP**

* DVT\-18470 Remove XULRunner from kit distributions

**Features**

* DVT\-22628 AI Assistant\: New '\@execute command' snippet
* DVT\-22857 AI Assistant\: New 'Agentic' chat profile
* DVT\-22972 AI Assistant\: New 'Review uncommitted changes' predefined blueprint
* DVT\-22973 AI Assistant\: New 'Summarize remote changes ahead of current commit' predefined blueprint
* DVT\-23575 New kit distributions with Eclipse 4\.37
* DVT\-23803 New Linux multiarch kit distributions (x86\_64 & aarch64)
* DVT\-23992 AI Assistant\: Ability to create chat profiles with a custom system prompt and tool set
* DVT\-24115 Schematic Diagrams\: New representation of structured datatypes
* DVT\-24220 AI Assistant\: Ability to generate commit messages in the Git Staging View
* DVT\-24225 AI Assistant\: New 'Generate commit message' predefined blueprint
* DVT\-24293 AI Assistant\: Ability to review and revert all changes made by file editing tools during a chat session
* DVT\-24650 New Log Viewer

**Enhancements**

* DVT\-23959 Waveform Viewer\: Show port values at primary cursor time in Schematic Diagrams
* DVT\-23996 AI Assistant\: Support separate model configuration for OpenAI\-compatible providers
* DVT\-24077 AI Assistant\: Enable tool call support for chat sessions started by predefined blueprints
* DVT\-24138 AI Assistant\: Ability to select a chat profile for blueprints
* DVT\-24230 Renamed kit distribution archives and the root folder inside
* DVT\-24295 & DVT\-24359 AI Assistant\: Add support for new OpenAI models that use Responses API
* DVT\-24562 Waveform Viewer\: 'Jump to time' action should move the primary cursor to the specified time
* DVT\-24563 Waveform Viewer\: 'Jump to time' action should center the specified timestamp
* DVT\-24564 Waveform Viewer\: Improve 'Jump to time' action validation for non\-existent timestamps

**Bugfixes**

* DVT\-21888 AI Assistant\: Cannot select a chat session from history while a message is being generated
* DVT\-23842 AI Assistant\: Google Gemini model configuration does not work when Vertex AI environment variables are set
* DVT\-24076 & DVT\-24137 AI Assistant\: Sometimes problem auto\-correct opens a diff editor with no actual changes
* DVT\-24372 Waveform Viewer\: 'Count edges' action doesn't work on multi\-bit/struct signals
* DVT\-24450 AI Assistant\: Duplicate diff editors should not be opened for the same edit tool call
* DVT\-24467 Semantic checks\: False TYPE\_MISMATCH error for external name with 'subtype attribute type
* DVT\-24495 Elaboration\: Parameter value is not computed in some cases
* DVT\-24497 Waveform Viewer\: Sometimes struct signals hierarchy is broken when importing from a configuration file
* DVT\-24521 Waveform Viewer\: $timescale is incorrectly parsed when spanning multiple lines
* DVT\-24552 Waveform Viewer\: ArithmeticException is thrown when a signal has multiple value changes between two consecutive timestamps
* DVT\-24574 AI Assistant\: Sometimes a newly generated chat session title is not reflected in the history
* DVT\-24586 AI Assistant\: 'write\_file' tool does not trigger an immediate incremental build

