I realise this is a necro, but the first 2 Free League games have been announced - Mutant Year Zero and ALIEN. The graphic with “more to come” shows Forbidden Lands, Vaesen, and Coriolis. I suspect The One Ring is too new, still.
I’m also curious whether The One Ring - and The Lord of the Rings RPG (the successor to Adventures in Middle-earth, which was a D&D 5e-compatible adaptation of TOR) - will be coming to Demiplane eventually.