> ## 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.

# 0.68.0

Released on 2025-02-11.

## Upgrade Instructions

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

## Enhancements

1. Arithmetic assignments and control conditions now support [quantum subscript
   expressions](https:///qmod-reference/language-reference/expressions/#path-operators).
   A quantum subscript expression comprises a classical list accessed by a quantum
   subscript, e.g., `x |= subscript([1, 2, 3, 4], y)`
   (in Native Qmod: `x = [1, 2, 3, 4][y];`).
2. Report an indicative error when not releasing local variables inside
   [control](/qmod-reference/language-reference/statements/control),
   [invert](/qmod-reference/language-reference/statements/invert) and
   [power](/qmod-reference/language-reference/statements/power) statements.
3. When running VQE using the `ClassiqSimulatorBackendNames.SIMULATOR_STATEVECTOR` backend,
   compute the expectation value directly from the state vector instead of running shots.
4. In the Python SDK, arguments of type `CArray` can now be NumPy arrays, tuples, and
   similar sequential objects. For example, the following statements are
   equivalent:
   `prepare_state([0.25, 0.25, 0.25, 0.25], 0, q)` and
   `prepare_state(np.ones(4) / 4, 0, q)`.

## Interface Changes

1. The `synthesize` and `write_qmod` functions now accept a
   [quantum entry point](https:///qmod-reference/language-reference/quantum-entry-point/?h=quantum+entry+point#model-outputs).
   Instead of `synthesize(create_model(main))`, write `synthesize(main)`.