diff --git a/README.md b/README.md
index 697b9c2..0a79dea 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,19 @@
-# Track Session Timer - v4.2.0
+# Track Session Timer - v4.3.0
 Trackday or race session timer.
 
 # Change log
-## Unreleased
+## Version 4.3
+### v4.3.0 [current]
 * Added an interactive post-track review with a high-visibility page for actual duration, overrun, completion reason, total maximum G, and each directional acceleration/braking/left/right peak.
 * Added left/right review navigation and prevented cool-down from starting until every result page has been reached and the final page is advanced.
 * Kept summary data in bounded RAM only; no session history is written to flash in this increment.
 * Retained captured peaks as explicitly partial data if the IMU fails during a session, while normal timing continues.
+* Added a live maximum-G value above the running track-session countdown.
 * Added a persistent Auto-Dim setting that reduces the Ready screen to 25% brightness after 10 seconds without motion and restores the saved brightness immediately when motion resumes or Ready is left.
 * Kept Auto-Dim disabled by default and preserved normal brightness if motion sensing is disabled or unavailable.
 * Moved the Ready-screen dim level into `params.json` as the validated `AUTO_DIM_PERCENT` system setting, defaulting to 25%.
-* Expanded hardware-independent regression coverage to 185 tests.
+* Added a hardware Bill of Materials identifying the cased Waveshare RP2040-Touch-LCD-1.28-B reference variant.
+* Expanded hardware-independent regression coverage to 186 tests.
 
 ## Version 4.2
 ### v4.2.0
@@ -207,7 +210,7 @@ When upgrading an existing device, omit that command so all of its saved user se
 
 ### 4. Verify first boot
 
-The display should show the Caterham v4.2.0 splash, the hardware-information splash, and then the green **Ready** screen. The serial console should report the loaded user parameters, `Success:Detected CST816T.`, and the touchscreen revision without a traceback.
+The display should show the Caterham v4.3.0 splash, the hardware-information splash with **Firmware v4.3.0**, and then the green **Ready** screen. The serial console should report the loaded user parameters, `Success:Detected CST816T.`, and the touchscreen revision without a traceback.
 
 If first boot fails:
 
@@ -226,7 +229,7 @@ The QMI8658 IMU is optional unless a non-zero Launch Mode sensitivity, G Mode, A
 
 ## Configuration files
 
-Version 4.2.0 uses two separate configuration scopes:
+Version 4.3.0 uses two separate configuration scopes:
 
 * `params.json` contains system-owned choices and display behavior: `DURATION_VALUES`, `LAUNCH_SENSE_VALUES`, `VERSION`, `DISPLAY_DELAY_REST`, `DISPLAY_DELAY_REST_COLOUR`, `STARTUP_SPLASH_DURATION_SEC`, `HARDWARE_SPLASH_DURATION_SEC`, `MODE_MENU_HOLD_SEC`, and `AUTO_DIM_PERCENT` (an integer from 1 to 100, default 25).
 * `user.json` contains the current user selections: `RACE_LENGTH` (track-session minutes), `REST_LENGTH` (pit-rest minutes), `SENSITIVITY` (launch threshold; `0` disables Launch Mode), `OPERATING_MODE` (`timer` or `g`), `BRIGHTNESS_PERCENT`, `DISPLAY_ROTATION_DEG` (`auto` or the fixed clockwise device mounting angle `0`, `90`, `180`, or `270`), and `AUTO_DIM_ENABLED` (`true` or `false`).
diff --git a/User Guide.md b/User Guide.md
index 6ad36ae..298b88b 100644
--- a/User Guide.md	
+++ b/User Guide.md	
@@ -1,4 +1,4 @@
-# User Guide - v4.2.0
+# User Guide - v4.3.0
 
 ## General / Sessions Use
 The following describes general operation of both the ``Track Session`` and ``Rest in Pits Session`` timer.
diff --git a/params.json b/params.json
index b1f2244..2aa5683 100644
--- a/params.json
+++ b/params.json
@@ -2,7 +2,7 @@
     "DURATION_VALUES": [1, 5, 10, 15, 20, 25, 30, 40, 50, 60], 
     "DISPLAY_DELAY_REST": 5, 
     "LAUNCH_SENSE_VALUES": [0, 0.5, 1, 1.25, 1.5, 1.75, 2, 2.5, 3.5, 4],
-    "VERSION": "4.2.0",
+    "VERSION": "4.3.0",
     "DISPLAY_DELAY_REST_COLOUR": "blue",
     "STARTUP_SPLASH_DURATION_SEC": 2,
     "HARDWARE_SPLASH_DURATION_SEC": 2,
diff --git a/settings.py b/settings.py
index ca75469..c9a34d1 100644
--- a/settings.py
+++ b/settings.py
@@ -12,7 +12,7 @@
     "DURATION_VALUES": [1, 5, 10, 15, 20, 25, 30, 40, 50, 60],
     "DISPLAY_DELAY_REST": 5,
     "LAUNCH_SENSE_VALUES": [0, 0.5, 1, 1.25, 1.5, 1.75, 2, 2.5, 3.5, 4],
-    "VERSION": "4.2.0",
+    "VERSION": "4.3.0",
     "DISPLAY_DELAY_REST_COLOUR": "blue",
     "STARTUP_SPLASH_DURATION_SEC": 2,
     "HARDWARE_SPLASH_DURATION_SEC": 2,
diff --git a/tests/test_release_version.py b/tests/test_release_version.py
new file mode 100644
index 0000000..45ac43a
--- /dev/null
+++ b/tests/test_release_version.py
@@ -0,0 +1,58 @@
+import json
+import unittest
+from pathlib import Path
+
+from hardware_splash import run_startup_screens
+from settings import DEFAULT_SYSTEM_PARAMS
+
+
+RELEASE_VERSION = "4.3.0"
+REPOSITORY_ROOT = Path(__file__).resolve().parents[1]
+
+
+class FakeTouch:
+    def __init__(self):
+        self.boot_version = None
+        self.hardware_lines = None
+
+    def BootScreen(self, _lcd, version_number):
+        self.boot_version = version_number
+
+    def ControlScreen(self, _lcd, text_array, back_colour):
+        self.hardware_lines = text_array
+        self.hardware_background = back_colour
+
+
+class ReleaseVersionTests(unittest.TestCase):
+    def test_build_defaults_docs_and_both_startup_screens_report_release(self):
+        with (REPOSITORY_ROOT / "params.json").open(encoding="utf-8") as source:
+            params = json.load(source)
+        readme = (REPOSITORY_ROOT / "README.md").read_text(encoding="utf-8")
+        user_guide = (REPOSITORY_ROOT / "User Guide.md").read_text(
+            encoding="utf-8"
+        )
+
+        self.assertEqual(RELEASE_VERSION, params["VERSION"])
+        self.assertEqual(RELEASE_VERSION, DEFAULT_SYSTEM_PARAMS["VERSION"])
+        self.assertTrue(readme.startswith("# Track Session Timer - v" + RELEASE_VERSION))
+        self.assertTrue(user_guide.startswith("# User Guide - v" + RELEASE_VERSION))
+
+        touch = FakeTouch()
+        run_startup_screens(
+            touch,
+            object(),
+            firmware_version=params["VERSION"],
+            startup_duration_sec=0,
+            hardware_duration_sec=0,
+            wait=lambda _lcd, _duration: None,
+        )
+
+        self.assertEqual(RELEASE_VERSION, touch.boot_version)
+        self.assertIn(
+            "Firmware v" + RELEASE_VERSION,
+            [line[0] for line in touch.hardware_lines],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()