I don't feel this is specifically Ghibli. A lot of it seems common to a wider range of Japanese media, of which Zelda is a prominent instance. - Flying islands

I don't feel this is specifically Ghibli. A lot of it seems common to a wider range of Japanese media, of which Zelda is a prominent instance. - Flying islands: also featured in several previous Zelda games including Minish Cap, Twilight Princess, and Skyward Sword. It's become a fairly common anime trope, though Laputa is definitely the oldest instance I can come up with. - Villains with lots of tentacles: That's a very common thing in Japanese media and seems to go back much further than modern anime. - I haven't watched Nausicaa yet (though I do have it in a Ghibli collection box that I've been slowly working my way through with my family). However, I feel the Zelda villages are basically just picturuesque Japanese countryside. - I am really looking forward to hearing more of it than I did through the trailers. So far, though, it sounds very much like a riff off of the soundtracks of earlier Zelda games. It makes sense that they're similar. After all, Koji Kondo (who wrote the music for many of the earlier Zelda games) is also Japanese and started his career shortly after Joe Hisaishi. They likely had similar influences.