Santa mode has been there all along, no? I’ve had it on my MSLRMy wife's M3LR got a push of 44.6 last night. There is a santa mode in the toybox, but enabling it (sleigh mode, I think?) just played christmas music loud with no volume control, so I turned it off. I was parked so not really sure what it does.
Didn't spot other features mentioned (profile syncing, blind spot camera) in settings. Forgot to check if waypoints were added.
My MYLR still on 36.5.5.