# 3.16.4 Release Notes Squirro 3.16.4 was released on July 22, 2026. Learn more about the [Squirro Release Process](../squirro-release-process.md#getting-squirro-process). ## Improvements ### Search - Technical Preview - OpenSearch support for similar-search scoring, exact and semantic vector rescoring, and machine learning ground-truth reads. ### Platform - Project selector for workspaces-enabled instances, with Pinned and All tabs, per-user project pinning, and search across project names, workspace display names, and workspace tenant names. - Containerized deployments can be managed with standard `systemctl` commands through a `squirro.service` systemd unit. ## Bug Fixes - Nginx configuration becoming invalid after upgrading from a version earlier than 3.16.3. - Technical Preview - Containerized deployments not restarting automatically after a host reboot. - Reference linking to Squirro items failing for some special item identifier formats. - Python SDK document upload ignoring the specified pipeline workflow ID and creating a new pipeline instead. - Chat language-handling instructions phrased incorrectly, so answers were not reliably produced in the language of the question. ## Project Neo Technical Preview | [Learn more](../../../technical/neo/index.md#neo) ### Improvements - Scheduled tasks that run an instruction on a recurring daily, weekly, monthly, or annual schedule, each run opening as a new conversation. - Task control from the tasks interface, including running a task on demand, browsing run history, and retrying or continuing a run. - Per-task approval rules to auto-approve, hold, block, or hide each tool the assistant may use while a task runs unattended. - Conversation filtering by origin, separating conversations you started from those a task created. - Task management from the `genai` command-line tool. - Split document retriever, now the default, with per-project retrieval engine, result count, and token budget. - Graceful turn completion that preserves the partial answer when a turn reaches its processing limit. - Automatic context-window management, keeping each turn within the model context window, with configurable per-project and per-model limits. - Reasoning-class OpenAI models supported through the OpenAI Responses API, used by default. - Conversation initialization options that shape how a conversation begins. - Time-aware assistant, grounded in the current date and time and the conversation start time. - Prompt caching for Anthropic models, reducing cost and time to first response. - Faster and more reliable knowledge graph queries, with HTTP Basic authentication support for the Knowledge Graph (SPARQL) tool. - Improved grounding on complex and research-style questions. - `neo-ui` command-line tool improvements, including non-interactive bundle creation, local-package scaffolding, and build and deploy preflight checks. ### Bug Fixes - Conversation start time resetting on every turn. - Project catalog breaking when a resource or assistant had no title. ## Installation and Upgrade For new installations, find step-by-step instructions on the [Install and Manage Squirro with Ansible](../../install/ansible/index.md#ansible) page (recommended) and [Installing Squirro on Linux](../../install/linux.md#install-linux) pages. To upgrade an existing installation, see the [Upgrading Squirro](../../install/upgrade.md#install-upgrade) page.