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doc: releases: Zephyr 4.1 release highlights

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A first stab at adding some highlights for the upcoming 4.1 release.

Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
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Benjamin Cabé 2025-02-19 10:19:26 +01:00 • committed by Fabio Baltieri
commit d15bbfafef
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doc/releases/release-notes-4.1.rst
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@ -30,9 +30,39 @@ Zephyr 4.1.0 (Working Draft)
############################
We are pleased to announce the release of Zephyr version 4.1.0.
Major enhancements with this release include:
**Performance improvements**
Multiple performance improvements of core Zephyr kernel functions have been implemented,
benefiting all supported hardware architectures.
An official port of the :zephyr_file:`thread_metric <tests/benchmarks/thread_metric>` RTOS
benchmark has also been added to make it easier for developers to measure the performance of
Zephyr on their hardware and compare it to other RTOSes.
**Experimental support for IAR compiler**
:ref:`toolchain_iar_arm` can now be used to build Zephyr applications. This is an experimental
feature that is expected to be improved in future releases.
**Initial support for Rust on Zephyr**
It is now possible to write Zephyr applications in Rust. :ref:`language_rust` is available through
an optional Zephyr module, and several code samples are available as a starting point.
**USB MIDI Class Driver**
Introduction of a new :ref:`USB MIDI 2.0 <usbd_midi2>` device driver, allowing Zephyr devices to
communicate with MIDI controllers and instruments over USB.
**Expanded Board Support**
Support for 70 :ref:`new boards <boards_added_in_zephyr_4_1>` and 11
:ref:`new shields <shields_added_in_zephyr_4_1>` has been added in this release.
This includes highly popular boards such as :zephyr:board:`rpi_pico2` and
:zephyr:board:`ch32v003evt`, several boards with CAN+USB capabilities making them good candidates
for running the Zephyr-based open source `CANnectivity`_ firmware, and dozens of other boards
across all supported architectures.
.. _CANnectivity: https://cannectivity.org/
An overview of the changes required or recommended when migrating your application from Zephyr
v4.0.0 to Zephyr v4.1.0 can be found in the separate :ref:`migration guide<migration_4.1>`.
@ -228,6 +258,8 @@ New APIs and options
* :c:struct:`led_dt_spec`
* :kconfig:option:`CONFIG_STEP_DIR_STEPPER`
.. _boards_added_in_zephyr_4_1:
New Boards
**********
..
@ -400,7 +432,7 @@ New Boards
* :zephyr:board:`we_oceanus1ev` (``we_oceanus1ev``)
* :zephyr:board:`we_orthosie1ev` (``we_orthosie1ev``)
* others
* Others
* :zephyr:board:`canbardo` (``canbardo``)
* :zephyr:board:`candlelight` (``candlelight``)
@ -408,6 +440,23 @@ New Boards
* :zephyr:board:`esp32c3_supermini` (``esp32c3_supermini``)
* :zephyr:board:`promicro_nrf52840` (``promicro_nrf52840``)
.. _shields_added_in_zephyr_4_1:
New shields
============
* :ref:`Abrobot ESP32 C3 OLED Shield <abrobot_esp32c3oled_shield>`
* :ref:`Adafruit Adalogger Featherwing Shield <adafruit_adalogger_featherwing_shield>`
* :ref:`Adafruit AW9523 GPIO Expander and LED Driver <adafruit_aw9523>`
* :ref:`MikroElektronika ETH 3 Click <mikroe_eth3_click>`
* :ref:`P3T1755DP Arduino® Shield Evaluation Board <p3t1755dp_ard_i2c_shield>`
* :ref:`P3T1755DP Arduino® Shield Evaluation Board <p3t1755dp_ard_i3c_shield>`
* :ref:`Digilent Pmod SD <pmod_sd>`
* :ref:`Renesas DA14531 Pmod Board <renesas_us159_da14531evz_shield>`
* :ref:`RTKMIPILCDB00000BE MIPI Display <rtkmipilcdb00000be>`
* :ref:`Seeed W5500 Ethernet Shield <seeed_w5500>`
* :ref:`ST B-CAMS-OMV-MB1683 <st_b_cams_omv_mb1683>`
New Drivers
***********
..