> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack Self-Hosted v2.8.2: July 22, 2026

> Robinhood Chain support, zero-downtime control-plane upgrades, cpctl update notifications, and node creation fixes.

This release adds Robinhood Chain support and makes control-plane upgrades safer with zero-downtime rollouts. It also brings update notifications to `cpctl` and fixes an invalid-configuration case in the new-node wizard.

## Robinhood Chain support

You can now deploy Robinhood Chain nodes. Support is built on a config-driven Arbitrum Nitro component, so the same foundation extends cleanly to other Nitro-based networks over time.

## Zero-downtime control-plane upgrades

Upgrading the Control Panel no longer interrupts running operations. The deployments API, workflow engine, and tracer now roll out one instance at a time, so an upgrade to a newer version completes without a service gap. This makes routine platform maintenance safe to run during business hours.

## Update notifications in cpctl

`cpctl` now checks whether a newer control-panel version is available and surfaces it when you install, check status, or run an upgrade. You get a clear heads-up when your installation is behind, so staying current no longer depends on manually tracking releases.

## Node creation improvements

The new-node wizard now correctly disables custom settings when they don't apply to the selected configuration, preventing invalid combinations before a deployment starts.

## Component versions

| Component          | Version |
| ------------------ | ------- |
| cp-ui              | v3.7.0  |
| cp-deployments-api | v0.42.0 |
| cp-workflows       | v3.10.0 |
| cp-tracer          | v0.2.1  |
| cp-auth            | v0.5.1  |
| cp-bolt            | v1.12.0 |