ok , I found out what’s going on.
Looks like you have not the last kernel firmwares into the NUC base images. Quite similar issue as here: Intel Nuc WiFi Issue
After loading manually the official linux firmware from here git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git I was able to load the bluetooth kernel module and the hci0 device up.
I’ll post a request on GitHub to get the last firmwares added into the base image.