# Tailwind CSS v0.6.6 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v0.6.6
- **Released:** Sep 21, 2018
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v0.6.6/

## Executive Summary (TL;DR)
Tailwind CSS v0.6.6. Source highlight: Promote `shadowLookup` from experiment to official feature

## New Features
- Promote `shadowLookup` from experiment to official feature

## Upgrade Command
```bash
npm install --save-exact tailwindcss@0.6.6
```