---
title: "Changelog"
url: "https://nsta1.github.io/Orleans.Lattice/CHANGELOG.html"
source: "https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.md"
documents: "Orleans.Lattice 9.9.0 (release line 9.9)"
built: "2026-10-04"
all-pages: "https://nsta1.github.io/Orleans.Lattice/llms.txt"
---
# Changelog

Part of the [Orleans.Lattice documentation](index.md).

All notable changes to the Orleans.Lattice package family are documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

This changelog covers the whole **package family** - every published `Orleans.Lattice` and `Orleans.Lattice.*` package, spanning the core library and its replication, storage, membership, auth, data, backup, caching, schema, scaling, dashboards, MCP, API/gRPC binding, and Explorer companions. Packages ship in lockstep on the major and minor digits; patch digits may advance per-package.

This is the **v9.x** changelog. Earlier release lines are archived: v8.x in [`CHANGELOG.old.v8.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v8.md), v7.x in [`CHANGELOG.old.v7.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v7.md), and v6.x and earlier in [`CHANGELOG.old.v6.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v6.md).

## Releases

One page per release, newest first. Each opens with the package versions that release shipped.

- [Release 2026-10-02](changelog/2026-10-02.md): Ships `9.9.0`. Coordinated lockstep release: 40 packages advance to `9.9.0`.
- [Release 2026-09-30](changelog/2026-09-30.md): Ships `9.8.2` and `9.8.1`. Patch release from the `release/9.8` line: `Orleans.Lattice` and `Orleans.Lattice.Dashboards` advance to `9.8.2`, and `Orleans.Lattice.Tenancy` and `Orleans.Lattice.Auth` to `9.8.1`.
- [Release 2026-09-29](changelog/2026-09-29.md): Ships `9.8.1`. Patch release: `Orleans.Lattice`, `Orleans.Lattice.Api.Backup`, `Orleans.Lattice.Api.Data`, `Orleans.Lattice.Api.Mcp`, `Orleans.Lattice.Api.Mcp.Telemetry`, `Orleans.Lattice.Api.Mcp.Telemetry.Azure`, `Orleans.Lattice.Api.State`...
- [Release 2026-09-26](changelog/2026-09-26.md): Ships `9.8.0`. Coordinated lockstep release: 40 packages advance to `9.8.0`.
- [Release 2026-09-24](changelog/2026-09-24.md): Ships `9.7.1` and `9.4.2`. Patch release: `Orleans.Lattice`, `Orleans.Lattice.Api.Telemetry`, `Orleans.Lattice.Api.Mcp.Telemetry`, `Orleans.Lattice.Api.Mcp.Telemetry.Azure`, `Orleans.Lattice.Backup`, `Orleans.Lattice.Replication`...
- [Release 2026-09-23](changelog/2026-09-23.md): Ships `9.7.1`. Patch release: `Orleans.Lattice.Storage.File` advances to `9.7.1`.
- [Release 2026-09-21](changelog/2026-09-21.md): Ships `9.7.0`. Coordinated lockstep release: 40 packages advance to `9.7.0`.
- [Release 2026-09-09](changelog/2026-09-09.md): Ships `9.6.2` and `9.6.1`. Patch release on the `9.6` line.
  - [Security](changelog/2026-09-09-1.md)
  - [Fixed](changelog/2026-09-09-2.md)
- [Release 2026-09-07](changelog/2026-09-07.md): Ships `9.6.1`. Patch release on the `9.6` line.
- [Release 2026-09-05](changelog/2026-09-05.md): Ships `9.6.0`. Coordinated family minor release - every published package outside the Explorer sub-family advances in lockstep to `9.6.0`.
  - [Added to Changed](changelog/2026-09-05-1.md)
  - [Fixed](changelog/2026-09-05-2.md)
- [Release 2026-09-03](changelog/2026-09-03.md): Ships `9.5.1`. Single-package patch release: `Orleans.Lattice` advances to `9.5.1` and the rest of the family stays at `9.5.0`.
- [Release 2026-09-02](changelog/2026-09-02.md): Ships `9.5.0`. Coordinated family minor release - every published package outside the Explorer sub-family advances in lockstep to `9.5.0`.
  - [Breaking to Changed](changelog/2026-09-02-1.md)
  - [Fixed to Security](changelog/2026-09-02-2.md)
- [Release 2026-08-31](changelog/2026-08-31.md): Ships `9.4.3` and `9.4.1`. A partial, pre-rewrite security wave ships nine packages from the `release/9.4` release line, cut at the last commit before the Explorer plugin rewrite so the fixes reach consumers without also publishing the in-progress console rewrite...
- [Release 2026-08-29](changelog/2026-08-29.md): Ships `9.4.0`, `9.4.1`, and `9.4.2`. A coordinated lockstep release advances the whole published package family to `9.4.0`: every `Orleans.Lattice` and `Orleans.Lattice.*` package on the v9 line moves to `9.4.0` together.
  - [Added to Changed](changelog/2026-08-29-1.md)
  - [Fixed](changelog/2026-08-29-2.md)
  - [Security](changelog/2026-08-29-3.md)
- [Release 2026-08-25](changelog/2026-08-25.md): Ships `9.3.0`. A coordinated lockstep release advances the whole published package family to `9.3.0`: every `Orleans.Lattice` and `Orleans.Lattice.*` package on the v9 line moves to `9.3.0` together.
- [Release 2026-08-23](changelog/2026-08-23.md): Ships `9.2.0`. A coordinated lockstep release advances the whole published package family to `9.2.0`: every `Orleans.Lattice` and `Orleans.Lattice.*` package on the v9 line moves to `9.2.0` together.
- [Release 2026-08-20](changelog/2026-08-20.md): Ships `9.1.0`. A coordinated lockstep release advances the whole published package family to `9.1.0`: every `Orleans.Lattice` and `Orleans.Lattice.*` package on the v9 line moves to `9.1.0` together.
- [Release 2026-08-19](changelog/2026-08-19.md): Ships `9.0.6`. A per-package patch advances `Orleans.Lattice` to `9.0.6` (see Changed and Fixed); all other packages remain at their `9.0.x`/`9.0.0` versions.
- [Release 2026-08-18](changelog/2026-08-18.md): Ships `9.0.2` and `9.0.5`. A per-package patch advances `Orleans.Lattice.Replication` to `9.0.2` and `Orleans.Lattice` to `9.0.5` (see Changed and Fixed); all other packages remain at their `9.0.x`/`9.0.0` versions.
- [Release 2026-08-17](changelog/2026-08-17.md): Ships `9.0.4`. A per-package patch advances `Orleans.Lattice` to `9.0.4` (see Added and Changed); all other packages remain at their `9.0.x`/`9.0.0` versions.
- [Release 2026-08-16](changelog/2026-08-16.md): Ships `9.0.3` and `9.0.1`. A per-package patch advances `Orleans.Lattice` to `9.0.3` and `Orleans.Lattice.Replication` to `9.0.1` (see Fixed); all other packages remain at their `9.0.x`/`9.0.0` versions.
- [Release 2026-08-15](changelog/2026-08-15.md): Ships `9.0.2`. A same-day per-package patch advances `Orleans.Lattice` to `9.0.2` (see Fixed); all other packages remain at their `9.0.x`/`9.0.0` versions.
- [Release 2026-08-14](changelog/2026-08-14.md): Ships `9.0.0` and `9.0.1`. Coordinated family major release - every package in the family advances in lockstep to `9.0.0`.

## Older releases

Changelog entries for the v8.x release line have been archived to [`CHANGELOG.old.v8.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v8.md).

Changelog entries for the v7.x release line have been archived to [`CHANGELOG.old.v7.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v7.md).

Changelog entries for v6.x and earlier - down to the historical pre-v6.0.0 notes - have been archived to [`CHANGELOG.old.v6.md`](https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.old.v6.md).