We are living in the the 6th astral era right now..

Also, we already are getting some changes, and they get more obvious with every patch.
Dalamud is kind of obvious, but has anyone ever noticed the map changes close to Nophica's Well?
The tiny lakes?
Monsters also got bigger (though that was actually due to players complaining, but still xD).
And since 1.21 aetherytes randomly turn red/orange like in the 2.0 concept art as if they are going to start flying away very soon..
I don't doubt the dev team will give us an awesome summer full of radical, creepy changes