Can Wwise support Higher Order Ambisonic output?

Question

I've seen on the "Using Ambisonics" help page that in order to get HOA output you need to code a custom plugin. Is this still the case? With ambisonic aux busses and the channel router plugin, is it possible to route to an ambisonic system?

Otherwise, does anyone know of any 3rd party plugins that allow HOA output? Thanks all for your help.