diff --git a/.changeset/pre.json b/.changeset/pre.json
index 81f1c55a8..b67845ec7 100644
--- a/.changeset/pre.json
+++ b/.changeset/pre.json
@@ -32,7 +32,13 @@
     "astro-scripts": "0.0.1",
     "@astrojs/language-server": "0.5.0",
     "astro-vscode": "0.5.0",
-    "www": "1.1.0"
+    "www": "1.1.0",
+    "@example/framework-lit": "0.0.1",
+    "@astrojs/renderer-lit": "0.1.0"
   },
-  "changesets": []
+  "changesets": [
+    "fair-flowers-sleep",
+    "tender-paws-smash",
+    "wicked-gifts-cover"
+  ]
 }
diff --git a/examples/blog-multiple-authors/package.json b/examples/blog-multiple-authors/package.json
index b239a9e4c..6b4e3422f 100644
--- a/examples/blog-multiple-authors/package.json
+++ b/examples/blog-multiple-authors/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/blog/package.json b/examples/blog/package.json
index 365d640af..076cb5c43 100644
--- a/examples/blog/package.json
+++ b/examples/blog/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/docs/package.json b/examples/docs/package.json
index e2c1252d8..deb860b53 100644
--- a/examples/docs/package.json
+++ b/examples/docs/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-lit/package.json b/examples/framework-lit/package.json
index 5b88fd9d4..deb5df928 100644
--- a/examples/framework-lit/package.json
+++ b/examples/framework-lit/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-multiple/package.json b/examples/framework-multiple/package.json
index 89cb69a74..ba10e6bdb 100644
--- a/examples/framework-multiple/package.json
+++ b/examples/framework-multiple/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-preact/package.json b/examples/framework-preact/package.json
index 77eb1e875..49619ff3e 100644
--- a/examples/framework-preact/package.json
+++ b/examples/framework-preact/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-react/package.json b/examples/framework-react/package.json
index c443caf21..04c727981 100644
--- a/examples/framework-react/package.json
+++ b/examples/framework-react/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-svelte/package.json b/examples/framework-svelte/package.json
index e2e149a90..b3fbfc72e 100644
--- a/examples/framework-svelte/package.json
+++ b/examples/framework-svelte/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-vue/package.json b/examples/framework-vue/package.json
index 9bdacbc8b..4eb4635b8 100644
--- a/examples/framework-vue/package.json
+++ b/examples/framework-vue/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/portfolio/package.json b/examples/portfolio/package.json
index 89e0cb393..7c954a551 100644
--- a/examples/portfolio/package.json
+++ b/examples/portfolio/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/snowpack/package.json b/examples/snowpack/package.json
index d36abe5b5..668534aef 100644
--- a/examples/snowpack/package.json
+++ b/examples/snowpack/package.json
@@ -11,7 +11,7 @@
     "lint": "prettier --check \"src/**/*.js\""
   },
   "dependencies": {
-    "astro": "^0.17.2",
+    "astro": "^0.18.0-next.0",
     "date-fns": "^2.19.0",
     "deepmerge": "^4.2.2",
     "docsearch.js": "^2.6.3",
@@ -25,7 +25,7 @@
     "@11ty/eleventy-plugin-syntaxhighlight": "^3.0.4",
     "@contentful/rich-text-html-renderer": "^14.1.2",
     "@contentful/rich-text-types": "^14.1.2",
-    "astro": "^0.17.2",
+    "astro": "^0.18.0-next.0",
     "eleventy-plugin-nesting-toc": "^1.2.0",
     "luxon": "^1.25.0",
     "markdown-it": "^12.0.2",
diff --git a/examples/starter/package.json b/examples/starter/package.json
index e513bc5d9..b07deaf9b 100644
--- a/examples/starter/package.json
+++ b/examples/starter/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/with-markdown-plugins/package.json b/examples/with-markdown-plugins/package.json
index d21922c47..a3157d13c 100644
--- a/examples/with-markdown-plugins/package.json
+++ b/examples/with-markdown-plugins/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2",
+    "astro": "^0.18.0-next.0",
     "rehype-add-classes": "^1.0.0",
     "rehype-toc": "^3.0.2",
     "remark-autolink-headings": "^6.0.1",
diff --git a/examples/with-markdown/package.json b/examples/with-markdown/package.json
index cc925a789..ca123df08 100644
--- a/examples/with-markdown/package.json
+++ b/examples/with-markdown/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/with-nanostores/package.json b/examples/with-nanostores/package.json
index ad1287718..bc0a39ef8 100644
--- a/examples/with-nanostores/package.json
+++ b/examples/with-nanostores/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "dependencies": {
     "nanostores": "^0.3.3"
diff --git a/examples/with-tailwindcss/package.json b/examples/with-tailwindcss/package.json
index b7a0ffd36..848b9a0b8 100644
--- a/examples/with-tailwindcss/package.json
+++ b/examples/with-tailwindcss/package.json
@@ -8,7 +8,7 @@
   },
   "devDependencies": {
     "tailwindcss": "^2.1.2",
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/packages/astro/CHANGELOG.md b/packages/astro/CHANGELOG.md
index 63e19065f..3477c18b7 100644
--- a/packages/astro/CHANGELOG.md
+++ b/packages/astro/CHANGELOG.md
@@ -1,5 +1,49 @@
 # astro
 
+## 0.18.0-next.0
+
+### Minor Changes
+
+- 0340b0f: Adds support for the client:media hydrator
+
+  The new `client:media` hydrator allows you to define a component that should only be loaded when a media query matches. An example usage:
+
+  ```jsx
+  ---
+  import Sidebar from '../components/Sidebar.jsx';
+  ---
+
+  <Sidebar client:media="(max-width: 700px)" />
+  ```
+
+  This allows you to define components which, for example, only run on mobile devices. A common example is a slide-in sidebar that is needed to add navigation to a mobile app, but is never displayed in desktop view.
+
+  Since Astro components can have expressions, you can move common media queries to a module for sharing. For example here are defining:
+
+  **media.js**
+
+  ```js
+  export const MOBILE = '(max-width: 700px)';
+  ```
+
+  And then you can reference this in your page:
+
+  **index.astro**
+
+  ```jsx
+  import Sidebar from '../components/Sidebar.jsx';
+  import { MOBILE } from '../media.js';
+  ---(<Sidebar client:media={MOBILE} />);
+  ```
+
+### Patch Changes
+
+- 8f4562a: Improve slot support, adding support for named slots and fallback content within `slot` elements.
+
+  See the new [Slots documentation](https://github.com/snowpackjs/astro/blob/main/docs/core-concepts/astro-components.md#slots) for more information.
+
+- 9859f53: Correcting typo in ReadMe
+
 ## 0.17.2
 
 ### Patch Changes
diff --git a/packages/astro/package.json b/packages/astro/package.json
index e0ef89326..3472783fa 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "astro",
-  "version": "0.17.2",
+  "version": "0.18.0-next.0",
   "author": "Skypack",
   "license": "MIT",
   "type": "module",
diff --git a/tools/language-server/package.json b/tools/language-server/package.json
index 3ae123c8f..fe05e8d8b 100644
--- a/tools/language-server/package.json
+++ b/tools/language-server/package.json
@@ -28,7 +28,7 @@
     "vscode-languageserver-textdocument": "^1.0.1"
   },
   "devDependencies": {
-    "astro": "^0.17.0",
+    "astro": "^0.18.0-next.0",
     "astro-scripts": "0.0.1"
   }
 }
diff --git a/www/package.json b/www/package.json
index 7b4ae0cb4..1f081db02 100644
--- a/www/package.json
+++ b/www/package.json
@@ -7,6 +7,6 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.18.0-next.0"
   }
 }