diff --git a/.github/release-notes.md b/.github/release-notes.md
index 18f5311..73b3b12 100644
--- a/.github/release-notes.md
+++ b/.github/release-notes.md
@@ -1,31 +1,13 @@
-Gearslip 0.3.39 runs as a head unit's home screen, connects to more cars, and brings Google Maps and Waze turns to the car.
+Gearslip 0.3.40 is a test build for a few cars that still don't connect.
 
-This is a pre-release. Many of these fixes target cars we don't own, so please try it and tell us how your car does. Attach a log to your issue: open Gearslip, tap Logs, then Share log.
-
-## New
-- Launcher mode: on a head unit that runs Android, or a spare phone or tablet on the dash, Gearslip can be the home screen. Turn it on under Settings > Connection. An All apps page opens everything else.
-- Turns from Google Maps or Waze on the phone show in the car's nav bar and on its instrument cluster.
-- An Apps card on the phone's home screen lets you hide apps from the car's drawer. Thanks to @johnneerdael.
-- A display density setting makes text and buttons bigger in car apps on small screens. Thanks to @johnneerdael.
-- A Language setting picks Gearslip's language, and spoken directions use a voice in that language.
-- Alerts from car apps show on the car screen, such as Waze asking whether a hazard is still there.
-- AntennaPod gets a Next chapter button.
-- The car list shows the names you gave your Bluetooth devices. Thanks to @theo330.
-- A car you once turned away can connect on its own again, from the car list.
+If your car works on 0.3.39, you don't need this one. If you're following #18, #39 or #57, please try it and attach a log to your issue: open Gearslip, tap Logs, then Share log.
 
 ## Fixed
-- Cars that waited for the music channel before showing a picture now show Gearslip's screen. This should fix the black screen or endless "Starting video" on the 2017 Pilot, 2020 Civic, 2021 CX-5 and 2024 Mirage.
-- Gearslip sends the car its icon and a session ID, as a real phone does. Older Hyundais that stopped after the first request should now connect.
-- Gearslip pings the car once a second, as a real phone does. This may stop the 2021 Bolt from hanging up after 25 seconds.
-- A still car screen gets a fresh frame every second, which should fix the black screen on some aftermarket boxes.
-- Wireless keeps calling the car until it answers, starts over after a failed step, and stays connected with the phone locked.
-- Music playing through Gearslip comes back after a call.
-- Car maps keep the phone's position while the phone is locked.
-- Spoken directions start the speech engine again when it fails to start.
-- Error messages say when the car's clock is wrong, and what to try when a connection gets stuck.
+- A car that holds back its screen is asked for it again with the detail older cars expect. This is for the 2017 Pilot (#57) and other cars on the oldest Android Auto version.
+- Music no longer carries on from the phone's speaker after you turn the car off. An app that started playing again by itself is paused a second time (#39).
+- A liked song lights up the whole like button, as shuffle and repeat do. Before, only the heart filled in for apps such as Metrolist.
 
-## For a few cars
-- Directions over the music channel, under Spoken directions in the car's settings: for a car that drops the connection or restarts after a spoken turn.
-- Phone's Bluetooth address, under Settings > Connection: for a car that drops the phone's Bluetooth when Gearslip connects. Copy the address from Android's Settings > About phone.
+## Testing
+- GM cars open two more channels, Bluetooth and Wi-Fi projection, and log what the car sends on them. This is to find out why the 2021 Bolt hangs up about 20 seconds in (#18). If you drive a GM car, type your phone's Bluetooth address under Settings > Connection > Phone's Bluetooth address. You'll find it in Android's Settings under About phone.
 
-New text is in English until translators catch up. Help with your language on [Weblate](https://hosted.weblate.org/engage/gearslip/).
+Help translate Gearslip on [Weblate](https://hosted.weblate.org/engage/gearslip/).
diff --git a/gearslip/build.gradle.kts b/gearslip/build.gradle.kts
index 3ae7871..e63bfa1 100644
--- a/gearslip/build.gradle.kts
+++ b/gearslip/build.gradle.kts
@@ -38,9 +38,9 @@ android {
         applicationId = "app.seb3thehacker.gearslip"
         minSdk = 31
         targetSdk = 37
-        versionCode = 14
+        versionCode = 15
         // -PgearslipVersionName=0.1.99-test makes a build that thinks it's older, to try the updater.
-        versionName = project.findProperty("gearslipVersionName")?.toString() ?: "0.3.39-alpha"
+        versionName = project.findProperty("gearslipVersionName")?.toString() ?: "0.3.40-alpha"
         manifestPlaceholders["appLabel"] = "Gearslip"
         // Where opted-in phones send their daily usage note: the stats-worker/ Worker's address,
         // set as gearslipStatsUrl in gradle.properties. Left empty, nothing is ever sent.
diff --git a/gearslip/src/main/java/app/seb3thehacker/gearslip/Changelog.kt b/gearslip/src/main/java/app/seb3thehacker/gearslip/Changelog.kt
index 455cc97..7b90971 100644
--- a/gearslip/src/main/java/app/seb3thehacker/gearslip/Changelog.kt
+++ b/gearslip/src/main/java/app/seb3thehacker/gearslip/Changelog.kt
@@ -10,6 +10,14 @@ object Changelog {
     class Release(val versionCode: Int, val versionName: String, val changes: List<String>)
 
     val releases = listOf(
+        Release(
+            15, "0.3.40-alpha",
+            listOf(
+                "A liked song lights up the whole like button, as shuffle and repeat do.",
+                "Music no longer carries on from the phone after you turn the car off.",
+                "Cars that hold back their screen are asked for it again in a way older cars understand.",
+            ),
+        ),
         Release(
             14, "0.3.39-alpha",
             listOf(