We’re releasing version 0.55.0 of the Arduino ® Core on Zephyr today, and it’s a meaningful one. This update resolves one of the most common friction points users have reported, adds support for two widely-used libraries, and brings us noticeably closer to our June target for marking this core stable and ending the BETA program. Concurrently, we’ll begin deprecating the corresponding cores based on mbedOS . If you’ve been following the beta, this one is worth updating to. Unified monitor and serial The single most requested fix in this cycle was simple and reasonable: Serial.println() should just work. On previous releases, users running the Arduino ® UNO ™ Q board had to be intentional about how they routed output — adding #include <Arduino_RouterBridge.h> and being mindful of target differences between IDE 2 and Arduino ® App Lab. That friction is gone in 0.55.…