Not sure if this has been mentioned yet, but GameFreak got the rights to the title "Delta Emerald". It's been pretty annoying how some people I know have been hyping up an Emerald remake, because I'm pretty sure GameFreak has done the same thing in the past and the games never got worked on.
Hasn't that been known for a while? I remember talking on another forum about Rayquaza's relation to the letter delta because of this. I suppose they do this just incase they decide to make a game with that title (afterall, ORAS is missing a lot of stuff that was in Emerald...). However if they never do anything with the name they may let the trademark expire, it's just right now they want to reserve the name just incase.