So as of now?

[rockleeuchiha]

Are we like in the past? Or was there a time skip, or are we in the present learning about about a whole different civilization that is associated with Zeke and Reiner I guess I wasn't paying enough attention a couple chapters ago

 

[Kanino]

A timeskip and in the present knowing about the lives on the other side of the ocean. Zeke's and Reiner.

 

[Zarakiq]

In chapters 91/92/93, the year is 854, 3 years after the ocean scene with Eren, Mikasa, Armin (year 851).

The war started in 850 between Marley and Mid-east allied forces,

Maybe in two chapters we will see our trio, for now we are witnessing the other side of the ocean (present).