I am trying to install ubuntu core in the new cm3+ without success. I tried with both core-16 and core-18 images I found at http://cdimage.ubuntu.com/ubuntu-core/. I obtained the same result in all test... the raspberry cm3+ is not booting. I am using the cm3+ dev kit following the instruction on https://ubuntu.com/download/iot/raspberry-pi-compute-module-3. As well as a specific board that host the cm3+.