Release 26.1

Here's what's new.

Support for MATLAB 2026a

26.1 supports MATLAB 2026a, so you can keep your toolchain on the latest MathWorks release without waiting.

New TestCase Manager in Simulink

Testing model-based software now happens where you build it. The new BTC TestManager is a modern web UI right inside Simulink, built for working with test data efficiently:

• Table-based view of your test cases — sort, filter, group, and save personalized views.
• Configurable keyboard shortcuts for fast, keyboard-first work.
• Execute and debug test cases directly on the original model, for fast, test-driven iterations.
• Import and link requirements from your ALM/PLM tools.

Updated plotting with a new diff feature

The plotting tool has a modern web UI and a new diff feature that compares two sets of simulation results directly — so you can see exactly where they differ. It makes short work of the questions that usually cost the most time:

• Why did a test fail? Compare expected against actual and see where the signals diverge.
• Where do MIL and SIL differ? Put model and code results side by side to pinpoint the divergence.
• What changed between two runs? Diff a new run against a previous one to spot exactly what moved.

Hand-written AUTOSAR code — a new project type

26.1 adds support for testing hand-written AUTOSAR code through a dedicated plugin. Point to your `.arxml` architecture definition and BTC EmbeddedTester takes care of the rest — stubbing and RTE generation — for both unit and integration testing. No manual harness, no boilerplate.

A new release of the BTC VS Code extension

For teams working with hand-written and AI-generated C/C++, the BTC VS Code extension brings professional, qualified testing right into the IDE:

• GoogleTest support.
• Proven code coverage analysis with many metrics, including MC/DC, visualized directly in the editor.
• Direct connection to ALM/PLM tools such as DOORS, Polarion and Jama.

The VS Code extension is also the first product to carry our new name — BTC TestStack (more on the naming below).

BTC AI Assistant

26.1 enhances our AI features for your testing workflow:

• A built-in chatbot to interact with the tool directly.
• Automatic generation of test cases and formalized requirements from natural language (requirements or prompt).
• A full MCP server for agentic workflows — usable from VS Code or any other AI environment or CLI.

A free AI skill for CI automation

For teams scripting CI pipelines against our REST API, we've published a free AI skill that lets you use your preferred AI to write, review, and improve your automation scripts.

Coming soon: a new name

Over the coming months, BTC EmbeddedPlatform (including BTC EmbeddedTester, BTC EmbeddedSpecifier and BTC EmbeddedValidator) will be renamed BTC TestStack. The new VS Code extension is the first product to carry the new name — BTC TestStack x VS Code. Existing licenses remain valid and now support more use cases than before; we will share details as the transition progresses.

Watch the highlights

Get 26.1