> ## Documentation Index
> Fetch the complete documentation index at: https://prod-mint.classiq.io/llms.txt
> Use this file to discover all available pages before exploring further.

# 0.86.0

Released on 2025-07-15.

## Upgrade Instructions

* [Python SDK](/getting-started/registration_installations#platform-version-updates)
* The IDE upgrades automatically.

## Enhancements

* [Concatenations](https:///qmod-reference/language-reference/quantum-variables/#concatenation-operator)
  can now also be used as [control](https:///qmod-reference/language-reference/statements/control/)
  expressions.
* Lower model creation and synthesis run times for large models.

## Bug Fixes

* Classical `if` statements are now supported in QP visualization, where they previously caused a failure.
* Fix synthesis bug which caused wrong results when using the bitwise invert (`~`) operator.
* Fix bug relating to classical struct arguments (such as
  [Hamiltonians](https:///qmod-reference/language-reference/classical-types/#hamiltonians)).
* Use the Solovay-Kitaev algorithm in more cases when transpiling. Previously, we used the algorithm when transpiling with
  respect to a particular fixed set of basis gates. Now, we use this algorithm whenever the basis gate set contains the Clifford gates
  `X`, `Z`, `H`, `T`, and `CX` but does not contain arbitrary-angle rotation gates such as `RX` or `CRZ`.

## Classiq IDE

1. Add mechanism to allow more models to be visualized in new visualization.

2. ### Visualization: Data Tab Removal

The Data tab has been removed from the left panel in the visualization interface. This change is removing redundant functionality.

3. ### Deprecation: QP Visualization Basic View Mode

Deprecated "Basic" mode quantum program visualization in favor of the new visualization scheme with enhanced designs, views, and analysis capabilities.

4. ### Visualization: Focused Search

The search panel focuses only on user written functions and QMOD statements.