Python: bump package versions for 1.6.0 release

[giles17]

Summary

Cuts the python-1.6.0 release. MINOR bump on the released cohort (agent-framework, agent-framework-core, agent-framework-openai, agent-framework-foundry: 1.5.0 -> 1.6.0), driven by a breaking behavioral change (instrumentation enabled by default), new features, and bug fixes. All 21 beta packages stamp 1.0.0b260521, all 4 alpha packages stamp 1.0.0a260521, and RC packages (agent-framework-ag-ui at 1.0.0rc2, agent-framework-orchestrations at 1.0.0rc1) remain unchanged (dependency bounds updated only). Date stamp reflects 2026-05-21 Pacific.

See python/CHANGELOG.md for the full set of changes shipping in this release.

Motivation and Context

Regular release cadence - ships features and fixes accumulated since the 1.5.0 release on 2026-05-19.

Description

• Released cohort (agent-framework, core, openai, foundry): 1.5.0 -> 1.6.0
• Beta packages (21 packages): 1.0.0b260519 -> 1.0.0b260521
• Alpha packages (azure-contentunderstanding, foundry-hosting, gemini, monty): 1.0.0a260518/19 -> 1.0.0a260521
• ag-ui: stays at 1.0.0rc2 (dependency bound updated only)
• orchestrations: stays at 1.0.0rc1 (dependency bound updated only)
• Inter-package dependency lower bounds updated (>=1.5.0,<2 -> >=1.6.0,<2)
• Update CHANGELOG compare links
• uv.lock refreshed

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? Yes - instrumentation enabled by default ([BREAKING] Python: Enable instrumentation by default #5865)

[Copilot]

Pull request overview

Cuts the Python 1.6.0 release by bumping package versions across the released cohort and stamping pre-release packages, while updating inter-package dependency bounds and release documentation.

Changes:

• Bump released cohort packages (agent-framework, core, openai, foundry) from 1.5.0 → 1.6.0 and update dependent lower bounds to >=1.6.0,<2.
• Stamp beta/alpha package versions to 1.0.0b260521 / 1.0.0a260521 and refresh uv.lock.
• Add the 1.6.0 changelog entry and update compare links.

Reviewed changes

Copilot reviewed 31 out of 32 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
python/uv.lock	Refresh lockfile to reflect the new package versions and updated dependency constraints.
python/pyproject.toml	Bump agent-framework to 1.6.0 and pin agent-framework-core[all] to 1.6.0.
python/CHANGELOG.md	Add 1.6.0 release notes and update compare links (Unreleased, 1.6.0).
python/packages/a2a/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/anthropic/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/azure-ai-search/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/azure-contentunderstanding/pyproject.toml	Stamp alpha version and bump core/foundry lower bounds to >=1.6.0,<2.
python/packages/azure-cosmos/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/azurefunctions/pyproject.toml	Stamp beta version and bump core + durabletask lower bounds to >=1.6.0 / >=1.0.0b260521.
python/packages/bedrock/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/chatkit/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/claude/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/copilotstudio/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/core/pyproject.toml	Bump agent-framework-core to 1.6.0.
python/packages/declarative/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/devui/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/durabletask/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/foundry/pyproject.toml	Bump agent-framework-foundry to 1.6.0 and bump core/openai lower bounds to >=1.6.0,<2.
python/packages/foundry_hosting/pyproject.toml	Stamp alpha version and bump core lower bound to >=1.6.0,<2.
python/packages/foundry_local/pyproject.toml	Stamp beta version and bump core/openai lower bounds to >=1.6.0,<2.
python/packages/gemini/pyproject.toml	Stamp alpha version and bump core lower bound to >=1.6.0,<2.0.
python/packages/github_copilot/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/hyperlight/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/lab/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/mem0/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/monty/pyproject.toml	Stamp alpha version and bump core lower bound to >=1.6.0,<2.
python/packages/ollama/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/openai/pyproject.toml	Bump agent-framework-openai to 1.6.0 and bump core lower bound to >=1.6.0,<2.
python/packages/orchestrations/pyproject.toml	Update core lower bound to >=1.6.0,<2 (RC package version unchanged per PR description).
python/packages/purview/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/redis/pyproject.toml	Stamp beta version and bump core lower bound to >=1.6.0,<2.
python/packages/ag-ui/pyproject.toml	Update core lower bound to >=1.6.0,<2 (RC package version unchanged per PR description).

[moonbox3]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
TOTAL	36245	4305	88%

report-only-changed-files is enabled. No files were changed during this commit :)

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
7238	34 💤	0 ❌	0 🔥	1m 47s ⏱️