diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd6f9d4aac..43810ef356 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## 1.14.0-SNAPSHOT (YYYY-MM-DD)
 
+This release will bump the Realm file format from version 23 to 24. Opening a file with an older format will automatically upgrade it. Downgrading to a previous file format is not possible.
+
 ### Breaking Changes
 * None.
 
@@ -31,9 +33,9 @@
 ### Internal
 * Update to Ktor 2.3.4.
 * Updated to CMake 3.27.7
-* Updated to Realm Core 13.26.0, commit 5533505d18fda93a7a971d58a191db5005583c92.
+* Updated to Realm Core 14.0.1 commit b1d32d3d20fcb80c747aad6b37b4a9d9179e0730.
 * Adding Sync tests via Github Action.
-* Updated to Swig 4.2.0. (Issue [GitHub #1632](https://github.com/realm/realm-kotlin/issues/1632)[JIRA RKOTLIN-1001](https://jira.mongodb.org/browse/RKOTLIN-1001))
+* Updated to Swig 4.2.0. (Issue [GitHub #1632](https://github.com/realm/realm-kotlin/issues/1632) [JIRA RKOTLIN-1001](https://jira.mongodb.org/browse/RKOTLIN-1001))
 
 
 ## 1.13.1-SNAPSHOT (YYYY-MM-DD)
diff --git a/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt b/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
index b79c41f4f4..58254b507c 100644
--- a/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
+++ b/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
@@ -942,7 +942,11 @@ actual object RealmInterop {
         val deletionCount = LongArray(1)
         val modificationCount = LongArray(1)
         val movesCount = LongArray(1)
+        // Not exposed in SDK yet, but could be used to provide optimized notifications when
+        // collections are cleared.
+        //  https://github.com/realm/realm-kotlin/issues/1498
         val collectionWasCleared = BooleanArray(1)
+        val collectionWasDeleted = BooleanArray(1)
 
         realmc.realm_collection_changes_get_num_changes(
             change.cptr(),
@@ -950,7 +954,8 @@ actual object RealmInterop {
             insertionCount,
             modificationCount,
             movesCount,
-            collectionWasCleared
+            collectionWasCleared,
+            collectionWasDeleted,
         )
 
         val insertionIndices: LongArray = initIndicesArray(insertionCount)
@@ -1042,16 +1047,22 @@ actual object RealmInterop {
         val deletions = longArrayOf(0)
         val insertions = longArrayOf(0)
         val modifications = longArrayOf(0)
+        val collectionWasDeleted = BooleanArray(1)
         realmc.realm_dictionary_get_changes(
             change.cptr(),
             deletions,
             insertions,
-            modifications
+            modifications,
+            collectionWasDeleted
         )
 
         val deletionStructs = realmc.new_valueArray(deletions[0].toInt())
         val insertionStructs = realmc.new_valueArray(insertions[0].toInt())
         val modificationStructs = realmc.new_valueArray(modifications[0].toInt())
+        // Not exposed in SDK yet, but could be used to provide optimized notifications when
+        // collections are cleared.
+        //  https://github.com/realm/realm-kotlin/issues/1498
+        val collectionWasCleared = booleanArrayOf(false)
         realmc.realm_dictionary_get_changed_keys(
             change.cptr(),
             deletionStructs,
@@ -1059,7 +1070,8 @@ actual object RealmInterop {
             insertionStructs,
             insertions,
             modificationStructs,
-            modifications
+            modifications,
+            collectionWasCleared,
         )
 
         // TODO optimize - integrate within mem allocator?
diff --git a/packages/external/core b/packages/external/core
index 5533505d18..b1d32d3d20 160000
--- a/packages/external/core
+++ b/packages/external/core
@@ -1 +1 @@
-Subproject commit 5533505d18fda93a7a971d58a191db5005583c92
+Subproject commit b1d32d3d20fcb80c747aad6b37b4a9d9179e0730
diff --git a/packages/jni-swig-stub/realm.i b/packages/jni-swig-stub/realm.i
index bbbad4dcbd..9ea8b25428 100644
--- a/packages/jni-swig-stub/realm.i
+++ b/packages/jni-swig-stub/realm.i
@@ -365,7 +365,9 @@ import static io.realm.kotlin.internal.interop.realm_errno_e.*;
 // bool output parameter
 %apply bool* OUTPUT { bool* out_found, bool* did_create, bool* did_delete_realm, bool* out_inserted,
                       bool* erased, bool* out_erased, bool* did_refresh, bool* did_run,
-                      bool* found, bool* out_collection_was_cleared, bool* did_compact };
+                      bool* found, bool* out_collection_was_cleared, bool* did_compact,
+                      bool* collection_was_cleared, bool* out_collection_was_deleted,
+                      bool* out_was_deleted};
 
 // uint64_t output parameter for realm_get_num_versions
 %apply int64_t* OUTPUT { uint64_t* out_versions_count };