diff --git a/wp-includes/class-wp-dependencies.php b/wp-includes/class-wp-dependencies.php
index f0c1aaa371..057fd8059e 100644
--- a/wp-includes/class-wp-dependencies.php
+++ b/wp-includes/class-wp-dependencies.php
@@ -91,7 +91,7 @@ class WP_Dependencies {
 	 *
 	 * @since 5.4.0
 	 *
-	 * @var array
+	 * @var ?array<string, true>
 	 */
 	private $all_queued_deps;
 
diff --git a/wp-includes/class-wp-duotone.php b/wp-includes/class-wp-duotone.php
index 2d0e72b19f..7c7416b439 100644
--- a/wp-includes/class-wp-duotone.php
+++ b/wp-includes/class-wp-duotone.php
@@ -52,7 +52,7 @@ class WP_Duotone {
 	 *
 	 * @since 6.3.0
 	 *
-	 * @var array
+	 * @var ?array
 	 */
 	private static $global_styles_block_names;
 
@@ -76,7 +76,7 @@ class WP_Duotone {
 	 *
 	 * @since 6.3.0
 	 *
-	 * @var array
+	 * @var ?array
 	 */
 	private static $global_styles_presets;
 
diff --git a/wp-includes/class-wp-query.php b/wp-includes/class-wp-query.php
index ba7395f959..07852fc8a5 100644
--- a/wp-includes/class-wp-query.php
+++ b/wp-includes/class-wp-query.php
@@ -22,7 +22,7 @@ class WP_Query {
 	 * Query vars set by the user.
 	 *
 	 * @since 1.5.0
-	 * @var array
+	 * @var ?array
 	 */
 	public $query;
 
@@ -72,7 +72,7 @@ class WP_Query {
 	 * The ID of the queried object.
 	 *
 	 * @since 1.5.0
-	 * @var int
+	 * @var ?int
 	 */
 	public $queried_object_id;
 
@@ -80,7 +80,7 @@ class WP_Query {
 	 * SQL for the database query.
 	 *
 	 * @since 2.0.1
-	 * @var string
+	 * @var ?string
 	 */
 	public $request;
 
@@ -88,7 +88,7 @@ class WP_Query {
 	 * Array of post objects or post IDs.
 	 *
 	 * @since 1.5.0
-	 * @var WP_Post[]|int[]
+	 * @var WP_Post[]|int[]|null
 	 */
 	public $posts;
 
@@ -139,7 +139,7 @@ class WP_Query {
 	 * The list of comments for current post.
 	 *
 	 * @since 2.2.0
-	 * @var WP_Comment[]
+	 * @var ?WP_Comment[]
 	 */
 	public $comments;
 
@@ -163,7 +163,7 @@ class WP_Query {
 	 * Current comment object.
 	 *
 	 * @since 2.2.0
-	 * @var WP_Comment
+	 * @var ?WP_Comment
 	 */
 	public $comment;
 
@@ -466,7 +466,7 @@ class WP_Query {
 	 * Cached list of search stopwords.
 	 *
 	 * @since 3.7.0
-	 * @var array
+	 * @var ?array
 	 */
 	private $stopwords;
 
diff --git a/wp-includes/class-wp-rewrite.php b/wp-includes/class-wp-rewrite.php
index 99bc689705..8b75fa5c36 100644
--- a/wp-includes/class-wp-rewrite.php
+++ b/wp-includes/class-wp-rewrite.php
@@ -52,7 +52,7 @@ class WP_Rewrite {
 	 * Permalink structure for author archives.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $author_structure;
 
@@ -60,7 +60,7 @@ class WP_Rewrite {
 	 * Permalink structure for date archives.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $date_structure;
 
@@ -68,7 +68,7 @@ class WP_Rewrite {
 	 * Permalink structure for pages.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $page_structure;
 
@@ -84,7 +84,7 @@ class WP_Rewrite {
 	 * Permalink structure for searches.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $search_structure;
 
@@ -124,7 +124,7 @@ class WP_Rewrite {
 	 * Comments feed permalink structure.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $comment_feed_structure;
 
@@ -132,7 +132,7 @@ class WP_Rewrite {
 	 * Feed request permalink structure.
 	 *
 	 * @since 1.5.0
-	 * @var string
+	 * @var ?string
 	 */
 	public $feed_structure;
 
diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php
index 49020d5e96..613011ec3c 100644
--- a/wp-includes/class-wp-theme.php
+++ b/wp-includes/class-wp-theme.php
@@ -114,7 +114,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Header data from the theme's style.css file after being sanitized.
 	 *
 	 * @since 3.4.0
-	 * @var array
+	 * @var ?array
 	 */
 	private $headers_sanitized;
 
@@ -122,7 +122,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Is this theme a block theme.
 	 *
 	 * @since 6.2.0
-	 * @var bool
+	 * @var ?bool
 	 */
 	private $block_theme;
 
@@ -132,7 +132,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Cached due to sorting functions running over the translated name.
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $name_translated;
 
@@ -140,7 +140,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Errors encountered when initializing the theme.
 	 *
 	 * @since 3.4.0
-	 * @var WP_Error
+	 * @var ?WP_Error
 	 */
 	private $errors;
 
@@ -162,7 +162,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Otherwise, 'template' is the same as 'stylesheet'.
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $template;
 
@@ -170,7 +170,7 @@ final class WP_Theme implements ArrayAccess {
 	 * A reference to the parent theme, in the case of a child theme.
 	 *
 	 * @since 3.4.0
-	 * @var WP_Theme
+	 * @var ?WP_Theme
 	 */
 	private $parent;
 
@@ -178,7 +178,7 @@ final class WP_Theme implements ArrayAccess {
 	 * URL to the theme root, usually an absolute URL to wp-content/themes
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $theme_root_uri;
 
@@ -186,7 +186,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Flag for whether the theme's textdomain is loaded.
 	 *
 	 * @since 3.4.0
-	 * @var bool
+	 * @var ?bool
 	 */
 	private $textdomain_loaded;
 
@@ -202,7 +202,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Block template folders.
 	 *
 	 * @since 6.4.0
-	 * @var string[]
+	 * @var ?string[]
 	 */
 	private $block_template_folders;
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index cc15b43048..c3b6f89817 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '7.0-alpha-61298';
+$wp_version = '7.0-alpha-61299';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.