Zephyr 4.2.0 (Working Draft)

We are pleased to announce the release of Zephyr version 4.2.0.

Major enhancements with this release include:

An overview of the changes required or recommended when migrating your application from Zephyr v4.1.0 to Zephyr v4.2.0 can be found in the separate migration guide.

The following sections provide detailed lists of changes by component.

API Changes

Removed APIs and options

  • Removed the deprecated the net_buf_put() and net_buf_get() API functions.

  • Removed the deprecated include/zephyr/net/buf.h header file.

Deprecated APIs and options


New APIs and options

New Boards

New Drivers

New Samples

Other notable changes