Thewonderer

Since you are on current you cannot expect a major bump until the next LTS kernel is released. current will receive security fixes only.
If you want something more recent you need to switch to edge kernels which follow non-LTS mainline kernel releases.

Available images are here:https://www.armbian.com/orangepi3b/
If your desired flavor and kernel combination isn't available build your own:https://github.com/armbian/build

I like the armbian-system-packages  armbian header information. Will modify my rock64 to output the additional information.   Thanks for the tip!