I downloaded image from https://www.armbian.com/orange-pi-pc-plus.
It marked as STABLE and has kernel 4.14.65. Package linux-image-next-sunxi version 5.59.
I'm trying to install kernel headers but in repository no package linux-headers-next-sunxi.
And also in repository no package linux-image-next-sunxi (it installed in downloaded image) so it is not possible update other orangepi to latest kernel.