NanoPi NEO2 stretch and kernel support H5


At the moment I am using DietPi with my NanoPi NEO2 board as an ovpn headless server.

Yet I was wondering when debian stretch comes available and will it be equipped with >= kernel 4.12, as currently in jessie 4.11 (4.11.1-sun50iw2 #17 SMP Thu Jun 15 03:10:38 CEST 2017 aarch64 GNU) is being used.
According to this page the initial support for the SoC was added as from kernel 4.12 .
I also realise a longterm kernel is preferred, but maybe there is a BETA image available I can test?