diff --git a/projects/packages/forms/changelog/add-core-blocks-to-forms b/projects/packages/forms/changelog/add-core-blocks-to-forms
new file mode 100644
index 000000000000..61d48859615a
--- /dev/null
+++ b/projects/packages/forms/changelog/add-core-blocks-to-forms
@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+Allow Accordion, Details, and Icon blocks in forms.
diff --git a/projects/packages/forms/changelog/allow-icon-in-dropzone b/projects/packages/forms/changelog/allow-icon-in-dropzone
new file mode 100644
index 000000000000..b729608f6c69
--- /dev/null
+++ b/projects/packages/forms/changelog/allow-icon-in-dropzone
@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+File Upload Dropzone: Allow Icon block to be added inside the dropzone.
diff --git a/projects/packages/forms/src/blocks/dropzone/index.js b/projects/packages/forms/src/blocks/dropzone/index.js
index c668638bb363..2b4821838d45 100644
--- a/projects/packages/forms/src/blocks/dropzone/index.js
+++ b/projects/packages/forms/src/blocks/dropzone/index.js
@@ -13,6 +13,7 @@ const settings = {
 	allowedBlocks: [
 		'core/button',
 		'core/heading',
+		'core/icon',
 		'core/image',
 		'core/list',
 		'core/paragraph',
diff --git a/projects/packages/forms/src/blocks/shared/util/constants.js b/projects/packages/forms/src/blocks/shared/util/constants.js
index fcad18529e2f..52bde03aa437 100644
--- a/projects/packages/forms/src/blocks/shared/util/constants.js
+++ b/projects/packages/forms/src/blocks/shared/util/constants.js
@@ -4,12 +4,15 @@ export const ALLOWED_FORMATS = [ 'core/bold', 'core/italic' ];
 export const ALLOWED_INNER_BLOCKS = [ 'jetpack/label', 'jetpack/input' ];
 
 export const CORE_BLOCKS = [
+	'core/accordion',
 	'core/audio',
 	'core/code',
 	'core/columns',
+	'core/details',
 	'core/group',
 	'core/heading',
 	'core/html',
+	'core/icon',
 	'core/image',
 	'core/list',
 	'core/math',
diff --git a/projects/packages/forms/src/form-editor/class-form-editor.php b/projects/packages/forms/src/form-editor/class-form-editor.php
index 4f89abd2de48..f9409340a458 100644
--- a/projects/packages/forms/src/form-editor/class-form-editor.php
+++ b/projects/packages/forms/src/form-editor/class-form-editor.php
@@ -75,8 +75,7 @@ public static function allowed_blocks_for_jetpack_form( $allowed_block_types, $e
 			'jetpack/field-image-select',
 
 			// Supporting blocks.
-			'jetpack/button',
-			'core/button',
+			'jetpack/button', // Used for the submit button previously.
 			'jetpack/label',
 			'jetpack/input',
 			'jetpack/options',
@@ -96,17 +95,20 @@ public static function allowed_blocks_for_jetpack_form( $allowed_block_types, $e
 			'jetpack/form-progress-indicator',
 
 			// Core blocks for rich content.
+			'core/accordion',
 			'core/audio',
-			'core/button',
+			'core/button', // Used for the submit button.
 			'core/code',
-			'core/columns',
 			'core/column',
+			'core/columns',
+			'core/details',
 			'core/group',
 			'core/heading',
 			'core/html',
+			'core/icon',
 			'core/image',
-			'core/list',
 			'core/list-item',
+			'core/list',
 			'core/math',
 			'core/paragraph',
 			'core/row',
diff --git a/projects/packages/forms/tests/php/form-editor/Form_Editor_Test.php b/projects/packages/forms/tests/php/form-editor/Form_Editor_Test.php
index f1d853a64726..21db2a8cd00c 100644
--- a/projects/packages/forms/tests/php/form-editor/Form_Editor_Test.php
+++ b/projects/packages/forms/tests/php/form-editor/Form_Editor_Test.php
@@ -89,6 +89,9 @@ public function test_allowed_blocks_for_jetpack_form_restricts_blocks() {
 		// Verify that core blocks are in the allowed list
 		$this->assertContains( 'core/paragraph', $result, 'Paragraph block should be allowed' );
 		$this->assertContains( 'core/heading', $result, 'Heading block should be allowed' );
+		$this->assertContains( 'core/accordion', $result, 'Accordion block should be allowed' );
+		$this->assertContains( 'core/details', $result, 'Details block should be allowed' );
+		$this->assertContains( 'core/icon', $result, 'Icon block should be allowed' );
 
 		// Verify that contact-form block is NOT in the list (handled by DOM manipulation)
 		$this->assertNotContains( 'jetpack/contact-form', $result, 'Contact form block should not be in the allowed list' );
@@ -410,7 +413,11 @@ public function test_allowed_blocks_list_completeness() {
 			'jetpack/field-rating',
 			'jetpack/field-text',
 			'jetpack/field-number',
+			'jetpack/field-hidden',
 			'jetpack/field-file',
+			'jetpack/field-time',
+			'jetpack/field-slider',
+			'jetpack/field-image-select',
 		);
 
 		// Expected blocks - supporting blocks
@@ -421,6 +428,11 @@ public function test_allowed_blocks_list_completeness() {
 			'jetpack/options',
 			'jetpack/option',
 			'jetpack/phone-input',
+			'jetpack/dropzone',
+			'jetpack/input-range',
+			'jetpack/input-rating',
+			'jetpack/fieldset-image-options',
+			'jetpack/input-image-option',
 		);
 
 		// Expected blocks - multistep blocks
@@ -434,17 +446,28 @@ public function test_allowed_blocks_list_completeness() {
 
 		// Expected blocks - core blocks
 		$expected_core_blocks = array(
-			'core/paragraph',
+			'core/accordion',
+			'core/audio',
+			'core/button',
+			'core/code',
+			'core/column',
+			'core/columns',
+			'core/details',
+			'core/group',
 			'core/heading',
+			'core/html',
+			'core/icon',
+			'core/image',
 			'core/list',
 			'core/list-item',
+			'core/math',
+			'core/paragraph',
+			'core/row',
 			'core/separator',
 			'core/spacer',
-			'core/columns',
-			'core/column',
-			'core/group',
-			'core/image',
-			'core/html',
+			'core/stack',
+			'core/subhead',
+			'core/video',
 		);
 
 		// Verify all expected blocks are present
diff --git a/projects/plugins/jetpack/changelog/update-forms-unlock-new-blocks b/projects/plugins/jetpack/changelog/update-forms-unlock-new-blocks
new file mode 100644
index 000000000000..85a7ffc5ed7e
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/update-forms-unlock-new-blocks
@@ -0,0 +1,4 @@
+Significance: minor
+Type: enhancement
+
+Forms: Allow Accordion, Details, and Icon blocks in forms, and Icon block to be added inside the file upload dropzone.