---
title: "Release 2026-09-02 - Changelog"
url: "https://nsta1.github.io/Orleans.Lattice/changelog/2026-09-02.html"
source: "https://github.com/NSTA1/Orleans.Lattice/blob/release/9.9/CHANGELOG.md?plain=1#L1297-L1306"
documents: "Orleans.Lattice 9.9.0 (release line 9.9)"
built: "2026-10-04"
all-pages: "https://nsta1.github.io/Orleans.Lattice/llms.txt"
---
# Release 2026-09-02

Part of the [changelog](../CHANGELOG.md).

Coordinated family minor release - every published package outside the Explorer sub-family advances in lockstep to `9.5.0`. The headline is a large security and hardening wave (nine fixes spanning tree aliasing, cross-cluster snapshot export, peer probe RPCs, the data- and state-API gRPC authorization seams, an all-trees wildcard that reached tenant administration, and Azure Blob backup id containment), online shard consolidation as the long-missing inverse of adaptive split (with a compact binary leaf-snapshot encoding and incremental leaf hydration alongside it), a broad allocation-trimming pass across the warm read, view-maintenance and coordination paths, and four new companion packages.

Four packages debut in this line, entering at the family version `9.5.0`: `Orleans.Lattice.GrainIndex` (typed grain indexing), `Orleans.Lattice.Membership.Oidc` (generic OpenID Connect credential authentication), and the backend-neutral telemetry facade `Orleans.Lattice.Api.Telemetry` with its binding `Orleans.Lattice.Api.Telemetry.Grpc`.

**The Explorer sub-family is deliberately held back at `9.4.0` / `9.4.1` and does not participate in this lockstep** - the first minor in the project's history that is not a complete family advance. The console rewrite ([#1790](https://github.com/NSTA1/Orleans.Lattice/issues/1790)) removes public types from the published `Orleans.Lattice.Explorer.Core` and would require minting thirteen new plugin package ids, so the whole sub-family ships together in the next major instead. Its entries remain under `## Unreleased`. Because no shipping package references an Explorer project, holding it back leaves no unresolvable dependency.

Four further companion packages remain **not yet published to NuGet** (build from source today): `Orleans.Lattice.Vector`, `Orleans.Lattice.Storage.File`, `Orleans.Lattice.Api.Mcp.RepoContext`, and `Orleans.Lattice.Api.Mcp.RepoContext.Replication`.

## Releases

- [Breaking to Changed](../changelog/2026-09-02-1.md)
- [Fixed to Security](../changelog/2026-09-02-2.md)

Newer release: [Release 2026-09-03](../changelog/2026-09-03.md). Older release: [Release 2026-09-02: Breaking to Changed](../changelog/2026-09-02-1.md). Contents: [Changelog](../CHANGELOG.md).