It looks like Nintendo embedded secret messages into The Legend of Zelda: Breath of the Wild footage from E3.
Zelda fans have already created a translation key for the written language seen throughout Breath of the Wild. They haven’t figured out every letter just yet—but they’re well on their way.
Image via the Zelda wiki
NeoGAF user RagnarokX mentioned it all began when Nintendo released a teaser image with Hylian text. Another GAFer “noticed a pattern,” and figured out the text read THELEGENDOFZELDA. It was enough letters to begin translating the Hylian found in Breadth of the Wild’s E3 footage.