So I haven't figured it all out yet because it's SO SMALL... but it looks like A Link Between Worlds is using the Skyward Sword Hylian alphabet. The catch? Since Nintendo never released HOW it works or even the full alphabet (except that they themselves did show in game how to use characters with duplicate meanings, but that's beside the point)... it looks like they swapped character meanings around and added some new characters to the mix.
Yep.. it looks almost the same but the meanings of characters are different, so in essence it's a new alphabet! I'll post more on it and my findings when I can figure a little bit more out, maybe try and get some pictures for you guys. :3
Update (Dec. 3 2012 @ 6:00pm MST):
SO...it looks like Nintendo saved me the trouble on this one. There's actually an official key for this version. Kind of disappointing, I wanted to study the signs! *laughs*
for pointing it out! :3zeldawiki.org/Hylian_Language#…