MetaRouter for recent OpenWrt

Hi,

i came along the MetaRouter feature as a great option to implement additional features along RouterOS. Using RouterOS for basic device-operation and implement specific application in an OpenWrt-VM will allow a lot of new features.
But checking around, the last official support-patch for OpenWrt is based on the several years old OpenWrt Kamikaze and a user-maintained support-patch for LEDE / OpenWrt-17.01 can only be found. both releases are not maintained by OpenWrt anymore and should be considered as insecure / having know security issues.

Is there some updates support-patch planned / available?
Is there another OpenSource platform known, that support MetaRouter? (I’m looking for OpenSource, as this will give the freedom of choice in software to include in the VM)

MetaRouter is going to die, but we should get containers instead (only nobody knows when exactly):

http://forum.mikrotik.com/t/v7-1-is-released/153754/651