diff --git a/.changeset/hip-queens-roll.md b/.changeset/hip-queens-roll.md
index 28d22aa3..87eebd74 100644
--- a/.changeset/hip-queens-roll.md
+++ b/.changeset/hip-queens-roll.md
@@ -1,5 +1,5 @@
 ---
-"@saleor/app-sdk": patch
+"@saleor/app-sdk": major
 ---
 
 Removed `/middlewares`, you should use `/handlers` instead.
diff --git a/.changeset/kind-zoos-raise.md b/.changeset/kind-zoos-raise.md
index 09fa1e09..6e0f67b1 100644
--- a/.changeset/kind-zoos-raise.md
+++ b/.changeset/kind-zoos-raise.md
@@ -4,6 +4,6 @@
 
 Removed deprecated fields fields and methods in `/handlers`:
 
-- `SaleorAsyncWebhook` and `SaleorSyncWebhook` - removed `asyncEvent` and `subscriptionQueryAst`
-- Removed `processSaleorWebhook` and `processProtectedHandler` methods
+- `SaleorAsyncWebhook` and `SaleorSyncWebhook` - removed deprecated `asyncEvent` and `subscriptionQueryAst`
+- Removed `processSaleorWebhook` and `processProtectedHandler` methods in favor of `SaleorSyncWebhook`, `SaleorAsyncWebhook` classes and `createProtectedHandler` handler
 - Some types were moved from `/next` to `/shared`
diff --git a/.changeset/rare-tools-change.md b/.changeset/rare-tools-change.md
index d07d1c18..2dd56931 100644
--- a/.changeset/rare-tools-change.md
+++ b/.changeset/rare-tools-change.md
@@ -3,3 +3,45 @@
 ---
 
 Added handlers for Web API: Request and Response
+
+## Example
+
+This example uses Next.js app router
+
+```ts
+/* /app/api/manifest/route.ts */
+import { createManifestHandler } from "@saleor/app-sdk/handlers/fetch-api";
+// or
+import { createManifestHandler } from "@saleor/app-sdk/handlers/next-app-router";
+
+export const GET = createManifestHandler({
+  manifestFactory({ appBaseUrl, request }) {
+    return {
+      name: "Saleor App Template",
+      tokenTargetUrl: `${appBaseUrl}/api/register`,
+      appUrl: appBaseUrl,
+      permissions: ["MANAGE_ORDERS"],
+      id: "saleor.app",
+      version: "0.0.1",
+      webhooks: [orderCreatedWebhook.getWebhookManifest(apiBaseURL)],
+      author: "Saleor Commerce",
+    };
+  },
+});
+```
+
+```ts
+/* /app/api/register/route.ts */
+import { createAppRegisterHandler } from "@saleor/app-sdk/handlers/fetch-api";
+
+export const POST = createAppRegisterHandler({
+  apl: saleorApp.apl,
+});
+```
+
+To see more details check these examples:
+
+- [Hono on Deno Deploy](https://github.com/witoszekdev/saleor-app-hono-deno-template)
+- [Hono on Cloudflare Pages](https://github.com/witoszekdev/saleor-app-hono-cf-pages-template)
+- [Hono on AWS Lambda](https://github.com/witoszekdev/saleor-app-hono-aws-lambda-template)
+- [Next.js Edge Runtime](https://github.com/saleor/saleor-app-template/pull/267)
diff --git a/.changeset/serious-lamps-rhyme.md b/.changeset/serious-lamps-rhyme.md
index d967a1d3..de19adfe 100644
--- a/.changeset/serious-lamps-rhyme.md
+++ b/.changeset/serious-lamps-rhyme.md
@@ -3,3 +3,5 @@
 ---
 
 Added AWS Lambda platform handlers
+
+Check [this example on how to use it](https://github.com/witoszekdev/saleor-app-lambda-template).
diff --git a/.changeset/silent-walls-heal.md b/.changeset/silent-walls-heal.md
new file mode 100644
index 00000000..c23fcfac
--- /dev/null
+++ b/.changeset/silent-walls-heal.md
@@ -0,0 +1,92 @@
+---
+"@saleor/app-sdk": major
+---
+
+`createManifestHandler` will now require `saleor-schema-version` header, sent by Saleor when fetching manifest.
+`schemaVersion` parameter passed to factory method will be always defined
+
+### Previously:
+
+```ts
+const handler = createManifestHandler({
+  manifestFactory({ schemaVersion }) {
+    schemaVersion -> null or number
+    return {
+      // ...
+    }
+  }
+})
+```
+
+Example request:
+
+```http
+GET /api/manifest
+host: my-app.com
+```
+
+```http
+GET /api/manifest
+host: my-app.com
+saleor-schema-version: 3.20
+```
+
+Example response:
+
+```http
+Content-Type: application/json
+
+{
+  "name": "Example Saleor App"
+  ...
+}
+```
+
+### Now:
+
+```ts
+const handler = createManifestHandler({
+  manifestFactory({ schemaVersion }) {
+    schemaVersion -> number
+    return {
+      // ...
+    }
+  }
+})
+```
+
+### Invalid request
+
+```http
+GET /api/manifest
+host: my-app.com
+```
+
+Response:
+
+```http
+HTTP 400
+Content-Type: text/plain
+
+Missing schema version header
+```
+
+### Valid request
+
+```http
+GET /api/manifest
+host: my-app.com
+saleor-schema-version: 3.20
+```
+
+Response:
+
+```http
+HTTP 200
+Content-Type: application/json
+
+{
+  "name": "Example Saleor App"
+  ...
+}
+```
diff --git a/.changeset/sixty-taxis-glow.md b/.changeset/sixty-taxis-glow.md
index 0bcc9431..5b1fe5ce 100644
--- a/.changeset/sixty-taxis-glow.md
+++ b/.changeset/sixty-taxis-glow.md
@@ -1,5 +1,5 @@
 ---
-"@saleor/app-sdk": patch
+"@saleor/app-sdk": minor
 ---
 
 Added abstract `PlatformAdapterInterface` and `ActionHandlerInterface` to enable cross-framework handler implementations.