# OpenTofu v1.10.1 — Release & Upgrade Intelligence
- **Product:** OpenTofu (https://opentofu.org)
- **Version:** v1.10.1
- **Released:** Jun 25, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/opentofu/updates/v1.10.1/

## Executive Summary (TL;DR)
OpenTofu v1.10.1. Source highlight: Fix `TF_APPEND_USER_AGENT` handling in the S3 remote state backend. (#2955)

## Bug Fixes
- Fix `TF_APPEND_USER_AGENT` handling in the S3 remote state backend. (#2955)