v4.1.0b4

Author: laurensvalk

CHANGELOG.md

@@ -4,10 +4,16 @@
 
 ## [Unreleased]
 
+[Unreleased]: https://github.com/pybricks/pybricks-micropython/compare/v4.1.0b4...HEAD
+
+## [4.1.0b4] - 2026-09-21
+
 ### Added
 - Support for setting a custom hub name when flashing NXT and EV3
   firmware ([support#2342]).
+- Support coding EV3 with Bluetooth.
 - Support `PlayStationController` on EV3.
+- Added live sensor information for all hubs. Protocol version is 1.7.0.
 
 ### Changed
 - Updated MicroPython to v1.29.0.
@@ -17,6 +23,8 @@
   e.g. "robot (SPIKE Prime)", instead of a fixed product name. The EV3
   Bluetooth Classic device name uses the same format. The BLE device name
   remains just the hub name ([support#2630]).
+- Setting detectable colors is limited to 8 colors per sensor.
+- Numerous Move Hub build size optimizations.
 
 ### Fixed
 - Fixed slow broadcasting while observing at the same time ([support#2822]).
@@ -27,14 +35,17 @@
   this device some colors when plugging in.
 - Fixed occasional segfault on EV3 with high data output.
 - Fixed output missing on Technic Hub and City Hub ([support#2814]).
+- Fixed various NXT stability and connectivity issues.
+- Fixed new Prime Hub variant sometimes resetting due to bootloader
+  misconfiguration.
 
 [support#2342]: https://github.com/pybricks/support/issues/2342
 [support#2630]: https://github.com/pybricks/support/issues/2630
 [support#2814]: https://github.com/pybricks/support/issues/2814
 [support#2822]: https://github.com/orgs/pybricks/discussions/2822
 [support#2826]: https://github.com/pybricks/support/issues/2826
 
-[Unreleased]: https://github.com/pybricks/pybricks-micropython/compare/v4.1.0b3...HEAD
+[4.1.0b3]: https://github.com/pybricks/pybricks-micropython/compare/v4.1.0b3...v4.1.0b4
 
 ## [4.1.0b3] - 2026-08-25
 

lib/pbio/include/pbio/protocol.h

@@ -24,7 +24,7 @@
 #define PBIO_PROTOCOL_VERSION_MAJOR 1
 
 /** The minor version number for the protocol. */
-#define PBIO_PROTOCOL_VERSION_MINOR 6
+#define PBIO_PROTOCOL_VERSION_MINOR 7
 
 /** The patch version number for the protocol. */
 #define PBIO_PROTOCOL_VERSION_PATCH 0
@@ -213,6 +213,8 @@ typedef enum {
      * This is the complement of ::PBIO_PYBRICKS_EVENT_WRITE_TELEMETRY. The
      * full payload details are given in telemetry.h.
      *
+     * @since Pybricks Profile v1.7.0
+     *
      * Parameters:
      * - payload: One or more telemetry commands.
      */

lib/pbio/include/pbio/version.h

@@ -26,7 +26,7 @@
 #define PBIO_VERSION_LEVEL_HEX 0xB
 
 /** The current prerelease serial. */
-#define PBIO_VERSION_SERIAL 3
+#define PBIO_VERSION_SERIAL 4
 
 /**
  * The current prerelease level as a string.