There are no patches for Emerald Dragon and I don't know of any discussion of it as well, but a friend of mine online (Steve and GUTS, it's Zig
) who has this site that translates the game with great detail. It's loaded with screenshots and describes each menu and translates everything excellently with his helpful sentences and nifty screenshots. I don't know the URL anymore, but I'll look for it later or ask him if he's online.
Oh by the way, his site didn't have the whole game translated, just up to past the first major dungeon when you save that chick I believe. I think there is more than that now actually, but once again I'll have to talk to him. It's also a great site for information regarding the game itself with it's history and bonus information.