neo4j · JPryce-Aklundh · Sep 29, 2025 · Jun 18, 2025 · Jun 18, 2025 · Jun 18, 2025
diff --git a/antora.yml b/antora.yml
@@ -7,4 +7,4 @@ nav:
 - modules/ROOT/content-nav.adoc
 asciidoc:
   attributes:
-    neo4j-version: '2025.08'
+    neo4j-version: '2025.09'
diff --git a/modules/ROOT/content-nav.adoc b/modules/ROOT/content-nav.adoc
@@ -91,15 +91,18 @@
 ** xref:functions/graph.adoc[]
 ** xref:functions/list.adoc[]
 ** xref:functions/load-csv.adoc[]
-** xref:functions/mathematical-logarithmic.adoc[]
-** xref:functions/mathematical-numeric.adoc[]
-** xref:functions/mathematical-trigonometric.adoc[]
+** Mathematical functions
+*** xref:functions/mathematical-logarithmic.adoc[]
+*** xref:functions/mathematical-numeric.adoc[]
+*** xref:functions/mathematical-trigonometric.adoc[]
 ** xref:functions/predicate.adoc[]
 ** xref:functions/scalar.adoc[]
 ** xref:functions/spatial.adoc[]
 ** xref:functions/string.adoc[]
-** xref:functions/temporal/duration.adoc[]
-** xref:functions/temporal/index.adoc[]
+** Temporal functions
+*** xref:functions/temporal/duration.adoc[]
+*** xref:functions/temporal/index.adoc[]
+*** xref:functions/temporal/format.adoc[]
 ** xref:functions/user-defined.adoc[]
 ** xref:functions/vector.adoc[]
 

diff --git a/modules/ROOT/pages/appendix/gql-conformance/additional-cypher.adoc b/modules/ROOT/pages/appendix/gql-conformance/additional-cypher.adoc
@@ -542,6 +542,20 @@ If the points are in a Cartesian CRS, the function returns the Euclidean distanc
 |===
 
 
+[[temporal-format-functions]]
+=== Temporal format functions
+
+[options="header", cols="2a,5a"]
+|===
+| Cypher feature
+| Description
+
+| xref:functions/temporal/format.adoc[`format()`]
+| Returns the temporal value as an ISO-formatted `STRING` or as a `STRING` formatted by the provided pattern.
+
+|===
+
+
 [[vector-functions]]
 === Vector functions
 

diff --git a/modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc b/modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc
@@ -22,6 +22,38 @@ Cypher 25 was introduced in Neo4j 2025.06 and can only be used on Neo4j 2025.06+
 Features removed in Cypher 25 are still available on Neo4j 2025.06+ databases either by prepending a query with `CYPHER 5` or by having Cypher 5 as the default language for the database.
 For more information, see xref:queries/select-version.adoc[].
 
+[[cypher-deprecations-additions-removals-2025.09]]
+== Neo4j 2025.09
+
+=== New in Cypher 25
+
+[cols="2", options="header"]
+|===
+| Feature
+| Details
+
+a|
+label:functionality[]
+label:new[]
+[source, cypher, role="noheader"]
+----
+WITH datetime('1986-11-18T6:04:45.123456789+01:00[Europe/Berlin]') AS dt
+RETURN format(dt, "MM/dd/yyyy") AS US, format(dt, "dd/MM/yyyy") AS EU
+----
+
+| Cypher's new xref:functions/temporal/format.adoc[`format()`] function can create dynamically formatted string representations of temporal instance and duration types.
+
+a| 
+label:functionality[]
+label:new[]
+
+New operator: `LockNodes`
+
+
+a| Introduced xref::planning-and-tuning/operators/operators-detail.adoc#query-plan-lock-nodes[`LockNodes`] operator, sometimes used in conjunction with the `LockingMerge` operator to lock nodes.
+
+|===
+
 [[cypher-deprecations-additions-removals-2025.08]]
 == Neo4j 2025.08
 

diff --git a/modules/ROOT/pages/functions/index.adoc b/modules/ROOT/pages/functions/index.adoc
@@ -207,8 +207,12 @@ LOAD CSV functions can be used to get information about the file that is process
 |===
 
 
+[[header-query-functions-mathematical]]
+== Mathematical functions
+
+
 [[header-query-functions-logarithmic]]
-== Logarithmic functions
+=== Logarithmic functions
 
 These functions all operate on numerical expressions only, and will return an error if used on any other values.
 
@@ -240,7 +244,7 @@ These functions all operate on numerical expressions only, and will return an er
 
 
 [[header-query-functions-numeric]]
-== Numeric functions
+=== Numeric functions
 
 These functions all operate on numerical expressions only, and will return an error if used on any other values.
 
@@ -280,7 +284,7 @@ These functions all operate on numerical expressions only, and will return an er
 
 
 [[header-query-functions-trigonometric]]
-== Trigonometric functions
+=== Trigonometric functions
 
 These functions all operate on numerical expressions only, and will return an error if used on any other values.
 
@@ -613,8 +617,12 @@ If the points are in a Cartesian CRS, the function returns the Euclidean distanc
 |===
 
 
+[[header-query-functions-temporal]]
+== Temporal functions
+
+
 [[header-query-functions-temporal-duration]]
-== Temporal duration functions
+=== Duration functions
 
 `DURATION` values of the xref::values-and-types/temporal.adoc[temporal types] can be created manipulated using the following functions:
 
@@ -645,7 +653,7 @@ If the points are in a Cartesian CRS, the function returns the Euclidean distanc
 |===
 
 [[header-query-functions-temporal-instant-types]]
-== Temporal instant types functions
+=== Instant type functions
 
 Values of the xref::values-and-types/temporal.adoc[temporal types] -- `DATE`, `ZONED TIME`, `LOCAL TIME`, `ZONED DATETIME`, and `LOCAL DATETIME` -- can be created manipulated using the following functions:
 
@@ -764,6 +772,23 @@ Values of the xref::values-and-types/temporal.adoc[temporal types] -- `DATE`, `Z
 |===
 
 
+[role=label--cypher-25-only label--new-Neo4j-2025.09]
+[[header-query-functions-temporal-format]]
+=== Format functions
+
+These functions format temporal instance and duration values:
+
+[options="header"]
+|===
+| Function | Signature | Description
+
+1.1+| xref::functions/temporal/format.adoc#query-functions-temporal-format-function[`format()`]
+| `format(value :: DATE \| LOCAL TIME \| ZONED TIME \| LOCAL DATETIME \| ZONED DATETIME \| DURATION[, pattern :: STRING]) :: STRING`
+| Returns the temporal value as an ISO-formatted `STRING` or as a `STRING` formatted by the provided pattern.
+
+|===
+
+
 [[header-query-functions-user-defined]]
 == User-defined functions
 

diff --git a/modules/ROOT/pages/functions/mathematical-logarithmic.adoc b/modules/ROOT/pages/functions/mathematical-logarithmic.adoc
@@ -2,7 +2,7 @@
 :table-caption!:
 
 [[query-functions-logarithmic]]
-= Mathematical functions - logarithmic
+= Logarithmic functions
 
 Logarithmic mathematical functions operate on numeric expressions only, and will return an error if used on any other values. See also xref:expressions/mathematical-operators.adoc[Mathematical operators].
 

diff --git a/modules/ROOT/pages/functions/mathematical-numeric.adoc b/modules/ROOT/pages/functions/mathematical-numeric.adoc
@@ -2,7 +2,7 @@
 :table-caption!:
 
 [[query-functions-numeric]]
-= Mathematical functions - numeric
+= Numeric functions
 
 Numeric mathematical functions operate on numeric expressions only, and will return an error if used on any other values.
 See also xref:expressions/mathematical-operators.adoc[Mathematical operators].

diff --git a/modules/ROOT/pages/functions/mathematical-trigonometric.adoc b/modules/ROOT/pages/functions/mathematical-trigonometric.adoc
@@ -2,7 +2,7 @@
 :table-caption!:
 
 [[query-functions-trigonometric]]
-= Mathematical functions - trigonometric
+= Trigonometric functions
 
 Trigonometric mathematical functions operate on numeric expressions only, and will return an error if used on any other values. See also xref:expressions/mathematical-operators.adoc[Mathematical operators].
 

diff --git a/modules/ROOT/pages/functions/temporal/duration.adoc b/modules/ROOT/pages/functions/temporal/duration.adoc
@@ -1,7 +1,7 @@
 :description: Cypher provides functions allowing for the creation and manipulation of temporal `DURATION` values.
 
 [[query-functions-temporal-duration]]
-= Temporal functions - duration
+= Duration functions
 :table-caption!:
 
 Duration functions allow for the creation and manipulation of temporal `DURATION` values.