After watching this trailer like 10 times and some analyses I believe it confirms what I've expected this game to be, basically a heavily updated version of Botw.
To the right is what looks like an entrance to the mountain which if it turns out to be fully explorable could be really cool.
It looks like the Maze in the Akkala region has been lifted into the sky.
During the lightning strike we can see this 'tornado' like thing which is also visable on the box art which is likely going to play a role.
While I do think that Hyrule being used again may be a negative point I believe this game could still be very fun.