# Tailwind CSS v2.2.0 — Release & Upgrade Intelligence
- **Product:** Tailwind CSS (https://tailwindcss.com)
- **Version:** v2.2.0
- **Released:** Jun 17, 2021
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/tailwind/updates/v2.2.0/

## Executive Summary (TL;DR)
Tailwind CSS v2.2.0. Source highlight: Six weeks ago I didn't even have v2.2 on my roadmap and yet somehow here we are today, with one of the biggest Tailwind CSS feature releases of all-time?!

## Breaking Changes & Deprecations
- I don't expect this will be a real problem for most people, but it's technically a breaking change which is why we've limited this improvment to the JIT engine only.

## New Features
- New features

## Improvements
- All-new improved Tailwind CLI
- Improved nesting support
- **No installation or configuration necessary** — simply `npx tailwindcss -o output.css` to compile Tailwind from anywhere. You can even enable JIT mode with the `--jit` flag and pass in your content files using the `--purge` option, all without creating a config file.
- **Watch mode** — so you can automatically rebuild your CSS whenever you make any changes.
- **JIT performance optimizations** — since our CLI is Tailwind-specific we've been able to make tons of optimizations that make it the absolute fastest build tool for compiling your CSS in JIT mode.
- **Minification support** — now you can minify your CSS with cssnano just by adding the `--minify` flag.

## Bug Fixes
- Fixes and improvements
- JIT: Support applying important utility variants (#4260)
- JIT: Improve support for Svelte class bindings (#4187)
- JIT: Improve support for `calc` and `var` in arbitrary values (#4147)
- Convert `hsl` colors to `hsla` when transforming for opacity support instead of `rgba` (#3850)
- Fix `backdropBlur` variants not being generated (#4188)

## Upgrade Command
```bash
npm install --save-exact tailwindcss@2.2.0
```