LE will support them once the upstream kernels we are based upon support core essentials like HDMI, Ethernet, mesa for GPU, and all the hardware decoders which are almost the same as existing chips (but enough different to need some work). There is quite a lot of activity from some of the professional development shops and Rockchip community sources (including some of our own contributors). All the media folks poking code are people we know (and who know us) so once things start to progress I'm sure we'll start taking a closer interest.
NB: It's probably possible to frankenstein an image today using the downstream vendor kernel and mali blobs etc. That's fine for desktop and industrial focussed distros like Manjaro and Armbian but "all the media stuff needs to work" for LE support and this is always the weakness in downstream kernels. It will be a fairly simple to get the basics for an image, but a large effort to get right, and all that effort will be superseded once upstream support kicks in, and we already have plenty of things to work on with existing RK SoCs .. so best to be patient.