Is it not yet possible to publish a livecube for Mac clients?
I came across this Wiki entry from a while ago - "As of LumenRT Connect Edition Update 1, Mac support has been suspended until Apple introduces higher performance real-time 3D graphics capabilities".
Does this still apply, and if so - what would constitute "higher performance real-time 3D graphics capabilities" ?
yes it does not support now.
Nothing we can do now.