I had some points on my energy sistem client account already lying around, then there was a special offer of 300 more for mother's day and finally a renewal offer (send us your old and get a new model for a smaller price). So I took advantage of it and my Pro+ went back and I now have a Pro HD, which has the flush screen. The whole process of sending the old device in and getting the new one lasted some weeks, but ah well.
It's nicely thinner and lighter than the pro+, the display is good, but I do miss the rounded corners a bit.
Apart from that it works exactly as the Pro+ did. I am wondering which Boyue model it is based on .....

???
Anyway, if you need me to look at things or experiment with it, ask me.
PS: Rooted of course

PS2: The Energy Sistem Pro HD is a Boyue T64 (says build.prop).