v4.0.0b4

Author: laurensvalk

CHANGELOG.md

@@ -4,31 +4,21 @@
 
 ## [Unreleased]
 
-## [4.0.0b3] - 2025-12-05
+## [4.0.0b4] - 2026-01-22
 
 ### Added
-- Added preliminary BTstack support for EV3 ([pybricks-micropython#405]).
 - Enabled NXT Light Sensor, NXT Touch Sensor, NXT Sound Sensor on NXT.
 - Added `host_connected_usb` to `hub.system.info()` dictionary.
 - Added `program_id` to `hub.system.info()` dictionary ([support#2538]).
 
 ### Changed
-- Make 3D orientation default for heading and drivebase heading control ([support#1962]).
-- Improved color detection when using default colors. Also changed the HSV calculation
-  for the SPIKE Color Sensor and Boost Color and Distance Sensor to make them
-  more similar. User code should measure HSV values again in old code ([pybricks-micropython#421]).
 - Reduced user stack size to `12 KB` on SPIKE Prime Hub to make it the same as
   SPIKE Essential Hub. This frees up some RAM for system resources, and we never
   use this much in practice.
 - Allow simultaneous USB and up to two Bluetooth connections to SPIKE Prime.
   Press the Bluetooth button to allow a connection when already connected.
 
 ### Fixed
-- Fixed `race=False` ignored in `pybricks.tools.multitask()` ([support#2468]).
-- Fixed Essential Hub button being disabled after power off so it could not be
-  switched on again.
-- Fixed `TechnicHub` class being unavailable on Technic Hub in a recent
-  pre-release ([pybricks-micropython#425]).
 - Fixed internal rounding error that could could cause a Drive Base to be 1 mm
   off after driving 3 meters, depending on configuration parameters ([support#2500]).
 - Fixed Powered Up remote light getting the wrong color ([support#2497]).
@@ -43,14 +33,33 @@
 - Fixed motors sometimes not working after boot ([support#2550]).
 
 [support#1509]: https://github.com/pybricks/support/issues/1509
-[support#1962]: https://github.com/pybricks/support/issues/1962
-[support#2468]: https://github.com/pybricks/support/issues/2468
 [support#2497]: https://github.com/pybricks/support/issues/2497
 [support#2500]: https://github.com/pybricks/support/issues/2500
 [support#2521]: https://github.com/pybricks/support/issues/2521
 [support#2522]: https://github.com/pybricks/support/issues/2522
 [support#2538]: https://github.com/pybricks/support/issues/2538
 [support#2550]: https://github.com/pybricks/support/issues/2550
+
+## [4.0.0b3] - 2025-12-05
+### Added
+- Added preliminary BTstack support for EV3 ([pybricks-micropython#405]).
+
+### Changed
+- Make 3D orientation default for heading and drivebase heading control ([support#1962]).
+- Improved color detection when using default colors. Also changed the HSV calculation
+  for the SPIKE Color Sensor and Boost Color and Distance Sensor to make them
+  more similar. User code should measure HSV values again in old code ([pybricks-micropython#421]).
+
+### Fixed
+- Fixed `race=False` ignored in `pybricks.tools.multitask()`. ([support#2468])
+- Fixed Essential Hub button being disabled after power off so it could not be
+  switched on again.
+- Fixed `TechnicHub` class being unavailable on Technic Hub in a recent
+  pre-release ([pybricks-micropython#425]).
+
+
+[support#1962]: https://github.com/pybricks/support/issues/1962
+[support#2468]: https://github.com/pybricks/support/issues/2468
 [pybricks-micropython#405]: https://github.com/pybricks/pybricks-micropython/pull/405
 [pybricks-micropython#421]: https://github.com/pybricks/pybricks-micropython/pull/421
 [pybricks-micropython#425]: https://github.com/pybricks/pybricks-micropython/pull/425

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018-2025 The Pybricks Authors
+Copyright (c) 2018-2026 The Pybricks Authors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

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.