Is the 53 man roster finalized? or are there any positions up in the air?

I'd say it's probably 99% decided. Maybe someone has a shot to show something on ST and get the last WR, CB, or LB spot?

Maybe Baron Batch has a shot to show if he's ready to be back or not?

But it feels like most of the decisions have already been made. We just don't know them of course.