I checked their website, and they (Ea Rpg team) also aimed to propose 3 rule sets for playing in Middle Earth. One basic, one standard and one advanced.Skipping this one: between AiME and the OSR games, I have enough d20 variants. (That goes for Midnight, too.)
Sadly, only the basic one seems finished. I took a brief look at the standard and advanced systems, and there are quite a lot of blank paragraphs.
I even found a paragraph (11.2) where the game refers to sub-systems from other games without explaining any of those (it's really "use rule A from game B, rule C from game D and rule E from game F").