.. _release-1-1-0:

Release 1.1.0
=============

MicroQuantum **1.1.0** is the first minor release after General
Availability.  It is strictly additive over 1.0.0: no public API was
renamed or removed, and every 1.0.0 program keeps working unchanged.

Status
------

- **Version**: 1.1.0.
- **Runtime**: Pure Python + NumPy.  Python 3.10 - 3.13.
- **Platforms**: designed for Windows, Linux, macOS and BSD; CI-verified on
  GitHub-hosted Ubuntu Linux, Windows and macOS.  See
  :doc:`/releases/platform-support` for the per-platform status.
- **Dependency**: NumPy is the only hard runtime dependency.
- **Documentation**: https://ajit-ai.github.io/microquantum/
- **License**: MIT.

What 1.1.0 adds over 1.0.0
--------------------------

* **Core engine expansion** — ``microquantum.core`` grows 17 focused
  subpackages (gates, operators, observables, states, channels,
  measurements, parameters, tensor, information, execution,
  architecture, resources, gradients, serialization, transpiler, plus
  circuit/pauli/registers packages): gate hierarchies, first-class
  observables/states/channels, a backend-independent execution model,
  hardware-independent architecture descriptions and a pass-based
  transpiler framework.  See :doc:`/concepts/core-expansion`.
* **SDK extension surface (Phase 121)** — contracts
  (``ConstrainedOptimizationProblem``, ``TimeEvolutionProblem``,
  ``ExcitedStateProblem``, ``AdapterRegistry``, ``Budget``),
  IR control nodes (``Loop``/``Switch``) with cost models, execution
  scheduling and caching, quantum counting, PUBO support, a
  data-reuploading classifier with ``fit``, the Steane code,
  Jordan-Wigner transforms, CDR mitigation, provider polling/proxy
  support, mirror benchmarking, experiment checkpoints and stdlib
  factories.  See :doc:`/concepts/phase121`.
* **Correctness hardening (Phase 122)** — fixed amplitude-estimation
  QPE accuracy, single-sourced SDK version reporting, strict search
  typing, offline provider replay fixtures, scheduled/budgeted batch
  execution, tensor-network depth coverage and hardware-aware
  transpiler passes (SWAP routing, noise-aware layout,
  commutation-aware cancellation).  See :doc:`/concepts/phase122`.

Stability
---------

The 1.0.0 SemVer commitments from :doc:`/releases/ga` still hold:
backward-compatible additions land in minor releases, serialized
schemas stay versioned with additive-only fields, and the 368-name
public gateway is covered by contract tests.

Upgrading from 1.0.0
--------------------

``pip install --upgrade microquantum`` — no code changes required.
One intentional behavior note: optimizer RNG streams were never part
of the compatibility contract and may differ where new
resampling/blocking options are enabled (defaults preserve prior
behavior).