Dear RIOTers,
I am happy to announce that RIOT 2025.07 “FieldGuide” has just been released! 
The 2025.07 release puts documentation front and center. With our new and shiny guide pages (#21404, #21436), it is easier than ever to pick up RIOT and start hacking! The new guides are available on https://guide.riot-os.org/
Two new checksum calculations have been added to RIOT: CRC16/IBM-SDLC (#21552) and reflected CRC8 with LSB first (#21543). The first one is needed for the new Slipmux driver (#21418) that is also part of this release. The latter in preparation for an upcoming 1-Wire driver (#19848).
This release includes the first part of the new Unified and Modular CoAP stack (unicoap #21390), providing initial parser and message APIs.
One new MCU is available for RIOT: The ESP32-H2 (#21522), including support for it’s IEEE 802.15.4 capabilities (#21590).
RIOT continues the transition to #pragma once header guards and to the SPDX
license format (#21497, #21504, #21501, #21496, #21430, #21591, #21517).
132 pull requests, composed of 443 commits, have been merged since the last release, and 3 issues have been solved. 29 people contributed with code in 90 days. 3833 files have been touched with 77135 (+) insertions and 49624 deletions (-).
Thank you for all the contributions,
Teufelchen