diff --git a/.changeset/fifty-trains-brake.md b/.changeset/fifty-trains-brake.md
new file mode 100644
index 0000000000..5902ea94e0
--- /dev/null
+++ b/.changeset/fifty-trains-brake.md
@@ -0,0 +1,7 @@
+---
+"@shopify/shopify-api": major
+---
+
+Webhook validation will now return a different `reason` value when the HMAC value is missing from the request. Instead of returning `WebhookValidationErrorReason.MissingHeaders` as it does for the other headers it validates, it will now return a new `WebhookValidationErrorReason.MissingHmac` error so this check matches other HMAC validations.
+
+If your app doesn't explicitly check for the error after calling `webhook.validate()`, you don't need to make any changes.
diff --git a/.changeset/tricky-actors-laugh.md b/.changeset/tricky-actors-laugh.md
new file mode 100644
index 0000000000..bd58f50c2c
--- /dev/null
+++ b/.changeset/tricky-actors-laugh.md
@@ -0,0 +1,5 @@
+---
+"@shopify/shopify-api": patch
+---
+
+Postponed deprecating the GraphQL clients' `query` method because they haven't been deprecated for long enough. They'll be removed when v11 is released instead.
diff --git a/packages/apps/shopify-api/docs/migrating-to-v10.md b/packages/apps/shopify-api/docs/migrating-to-v10.md
index 03302cf6b6..1470ee7f3d 100644
--- a/packages/apps/shopify-api/docs/migrating-to-v10.md
+++ b/packages/apps/shopify-api/docs/migrating-to-v10.md
@@ -7,3 +7,69 @@ This document outlines the changes you need to make to your app to migrate from
 The `scopes` property on the config object is now optional. If your app is using the new [managed install flow](https://shopify.dev/docs/apps/auth/installation), it is now recommended you omit the `scopes` property from the config object.
 
 Using both the `scopes` property and managed install can lead to unexpected behavior if these values are not kept in sync.
+
+If you are directly accessing the scopes from the config object, you should update your code to handle the case where the `scopes` property is not present.
+
+For example, but not limited to:
+
+```js
+// Before
+const scopes = shopify.config.scopes.toString();
+
+// After
+const scopes = shopify.config.scopes ? shopify.config.scopes.toString() : '';
+```
+
+## v10_lineItemBilling future flag has been renamed to lineItemBilling
+
+The `lineItemBilling` feature will **not** be enabled by default in v10. Because of this it has been renamed `lineItemBilling`. If you are using the `v10_lineItemBilling` future flag, you can optionally update your code to use the `lineItemBilling` feature flag instead.
+
+## Webhook validation no longer returns `MissingHeaders` when HMAC header is missing
+
+Webhook validation will now return a different `reason` value when the HMAC value is missing from the request.
+
+Instead of returning `WebhookValidationErrorReason.MissingHeaders` as it does for the other headers it validates, it will now return a new `WebhookValidationErrorReason.MissingHmac` error so this check matches other HMAC validations.
+
+```ts
+import {type WebhookValidationErrorReason} from '@shopify/shopify-api';
+
+const check = await shopify.webhooks.validate({
+  rawBody: (req as any).rawBody,
+  rawRequest: req,
+  rawResponse: res,
+});
+
+// Before
+if (
+  !check.valid &&
+  check.reason === WebhookValidationErrorReason.MissingHeaders &&
+  check.missingHeaders.includes(ShopifyHeader.Hmac)
+) {
+  // Handle error
+}
+
+// After
+if (!check.valid && check.reason === WebhookValidationErrorReason.MissingHmac) {
+  // Handle error
+}
+```
+
+## Internal build paths changed to introduce ESM and CJS exports
+
+We started exporting both CJS and ESM outputs in this version, which affected how we export the files from the package internally.
+
+While this should have no effect on most apps, if you're directly importing a file from the package, its path will have changed.
+
+Regular imports for package files remain unchanged.
+
+```ts
+// Before
+import 'node_modules/@shopify/shopify-api/lib/clients/admin/graphql/client';
+import '@shopify/shopify-api/adapters/node';
+
+// After
+// Add `dist/esm|cjs/` before the file
+import 'node_modules/@shopify/shopify-api/dist/esm/lib/clients/admin/graphql/client';
+// Unchanged
+import '@shopify/shopify-api/adapters/node';
+```
diff --git a/packages/apps/shopify-api/lib/clients/admin/graphql/client.ts b/packages/apps/shopify-api/lib/clients/admin/graphql/client.ts
index b1546a3415..1c5aa044d0 100644
--- a/packages/apps/shopify-api/lib/clients/admin/graphql/client.ts
+++ b/packages/apps/shopify-api/lib/clients/admin/graphql/client.ts
@@ -69,7 +69,7 @@ export class GraphqlClient {
     params: GraphqlParams,
   ): Promise<RequestReturn<T>> {
     logger(this.graphqlClass().config).deprecated(
-      '10.0.0',
+      '11.0.0',
       'The query method is deprecated, and was replaced with the request method.\n' +
         'See the migration guide: https://github.com/Shopify/shopify-app-js/blob/main/packages/apps/shopify-api/docs/migrating-to-v9.md#using-the-new-clients.',
     );
diff --git a/packages/apps/shopify-api/lib/clients/storefront/client.ts b/packages/apps/shopify-api/lib/clients/storefront/client.ts
index bf838ac5ac..4ec92e1a5e 100644
--- a/packages/apps/shopify-api/lib/clients/storefront/client.ts
+++ b/packages/apps/shopify-api/lib/clients/storefront/client.ts
@@ -84,7 +84,7 @@ export class StorefrontClient {
     params: GraphqlParams,
   ): Promise<RequestReturn<T>> {
     logger(this.storefrontClass().config).deprecated(
-      '10.0.0',
+      '11.0.0',
       'The query method is deprecated, and was replaced with the request method.\n' +
         'See the migration guide: https://github.com/Shopify/shopify-app-js/blob/main/packages/apps/shopify-api/docs/migrating-to-v9.md#using-the-new-clients.',
     );
diff --git a/packages/apps/shopify-api/lib/webhooks/__tests__/validate.test.ts b/packages/apps/shopify-api/lib/webhooks/__tests__/validate.test.ts
index 833f26b763..12ded14638 100644
--- a/packages/apps/shopify-api/lib/webhooks/__tests__/validate.test.ts
+++ b/packages/apps/shopify-api/lib/webhooks/__tests__/validate.test.ts
@@ -33,7 +33,6 @@ describe('shopify.webhooks.validate', () => {
   it.each([
     {headers: {apiVersion: ''}, missingHeader: ShopifyHeader.ApiVersion},
     {headers: {domain: ''}, missingHeader: ShopifyHeader.Domain},
-    {headers: {hmac: ''}, missingHeader: ShopifyHeader.Hmac},
     {headers: {topic: ''}, missingHeader: ShopifyHeader.Topic},
     {headers: {webhookId: ''}, missingHeader: ShopifyHeader.WebhookId},
   ])(`returns false on missing header $missingHeader`, async (config) => {
@@ -73,6 +72,22 @@ describe('shopify.webhooks.validate', () => {
     });
   });
 
+  it('returns false on missing HMAC', async () => {
+    const shopify = shopifyApi(testConfig());
+    const app = getTestApp(shopify);
+
+    const response = await request(app)
+      .post('/webhooks')
+      .set(headers({hmac: ''}))
+      .send(rawBody)
+      .expect(200);
+
+    expect(response.body.data).toEqual({
+      valid: false,
+      reason: WebhookValidationErrorReason.MissingHmac,
+    });
+  });
+
   it('returns false on invalid HMAC', async () => {
     const shopify = shopifyApi(testConfig());
     const app = getTestApp(shopify);
diff --git a/packages/apps/shopify-api/lib/webhooks/process.ts b/packages/apps/shopify-api/lib/webhooks/process.ts
index 5f2f3cc77e..1124a0e969 100644
--- a/packages/apps/shopify-api/lib/webhooks/process.ts
+++ b/packages/apps/shopify-api/lib/webhooks/process.ts
@@ -181,6 +181,10 @@ async function handleInvalidWebhook(
       response.statusCode = StatusCode.BadRequest;
       response.errorMessage = 'No body was received when processing webhook';
       break;
+    case WebhookValidationErrorReason.MissingHmac:
+      response.statusCode = StatusCode.BadRequest;
+      response.errorMessage = `Missing HMAC header in request`;
+      break;
     case WebhookValidationErrorReason.InvalidHmac:
       response.statusCode = StatusCode.Unauthorized;
       response.errorMessage = `Could not validate request HMAC`;
diff --git a/packages/apps/shopify-api/lib/webhooks/validate.ts b/packages/apps/shopify-api/lib/webhooks/validate.ts
index 3a5352b945..c235dc4a4c 100644
--- a/packages/apps/shopify-api/lib/webhooks/validate.ts
+++ b/packages/apps/shopify-api/lib/webhooks/validate.ts
@@ -48,15 +48,6 @@ export function validateFactory(config: ConfigInterface) {
     });
 
     if (!validHmacResult.valid) {
-      // Deprecated: this is for backwards compatibility with the old HMAC validation
-      // This will be removed in the next major version, and missing_hmac will be returned instead of missing_header when the hmac is missing
-      if (validHmacResult.reason === ValidationErrorReason.MissingHmac) {
-        return {
-          valid: false,
-          reason: WebhookValidationErrorReason.MissingHeaders,
-          missingHeaders: [ShopifyHeader.Hmac],
-        };
-      }
       if (validHmacResult.reason === ValidationErrorReason.InvalidHmac) {
         const log = logger(config);
         await log.debug(