Updated to v3.2 three nights ago. Since then, the device has been cueing roughly six to eight minutes earlier in the REM window than my previous baseline.
I've been running this protocol for eleven weeks with a very consistent baseline — cues typically logged between 3:35 and 3:50 AM, corresponding to what I estimate is my third REM cycle. Post-update, the cues are hitting closer to 3:25–3:35.
The earlier window is shallower for me. I'm getting more arousal events and fewer integration logs. Night before last I woke fully twice from cues that previously would have integrated or passed unnoticed.
Logs attached. No hardware changes. Same strap tension, same positioning, same sleep window (00:45–07:00). Firmware is the only variable.
Before I roll back to v3.1.4, I want to know if anyone else is seeing this. The v3.2 release notes mention improved REM classifier accuracy — possible the new model has a different sensitivity profile that's interacting with my signal in an unexpected way.