diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index 83c3dbf2f..a8e62d440 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -990,6 +990,12 @@ message Config {
        * Check local law!
        */
       ITU2_125CM = 37;
+
+      /*
+       * New Zealand 915MHz-928MHz
+       * Same band as ANZ, for use with the Short Fast modem preset
+       */
+      NZ_915 = 38;
     }
 
     /*
diff --git a/meshtastic/mesh.options b/meshtastic/mesh.options
index 5a0f2bde8..3f5d3378b 100644
--- a/meshtastic/mesh.options
+++ b/meshtastic/mesh.options
@@ -102,10 +102,10 @@
 # the 512-byte MAX_TO_FROM_RADIO_SIZE cap. nanopb sizes repeated enums unpacked
 # (~2 bytes/element), so the flat groups + region_groups layout keeps cost additive
 # rather than groups*regions. See bin/regen-protos.sh output for the actual size.
-# region_groups capped at 38 = the number of RegionCode enum values, so it can
+# region_groups capped at 39 = the number of RegionCode enum values, so it can
 # never overflow regardless of how many regions gain a firmware table entry.
 *LoRaRegionPresetMap.groups        max_count:8
-*LoRaRegionPresetMap.region_groups max_count:38
+*LoRaRegionPresetMap.region_groups max_count:39
 *LoRaPresetGroup.presets           max_count:11
 *LoRaRegionPresets.group_index     int_size:8
 
diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index 008cc1f63..3f71d1152 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -1809,8 +1809,14 @@ message MeshPacket {
    * Note: this field is _never_ sent on the radio link itself (to save space) Times
    * are typically not sent over the mesh, but they will be added to any Packet
    * (chain of SubPacket) sent to the phone (so the phone can know exact time of reception)
-   */
-  fixed32 rx_time = 7;
+   * Explicit presence: firmware cannot always attach a trustworthy wall-clock timestamp at the
+   * moment of reception - a node with no GPS and no phone connected yet has no time source at
+   * all. has_rx_time disambiguates that state from a genuine (if coincidental) 1970-01-01
+   * reading. A packet delivered with this field absent may still be re-timestamped once a valid
+   * clock becomes available, before the phone ever sees it - "absent" is not guaranteed
+   * permanent, only "not yet known at last observation".
+   */
+  optional fixed32 rx_time = 7;
 
   /*
    * *Never* sent over the radio links.