After you finish the main story for Mass Effect: Andromeda, you can carry on playing to take on whatever missions and secondary objectives you left behind, but there might also be a hint in there about what we'll see in the future (before we continue, we must warn that there are small spoilers ahead!).
Right after you finish the main quest, while still on Hyperion, there's a member of the Ark's crew that asks to talk with you. This is an optional conversation you can easily ignore, but in fact it may well contain quite a big hint, as this character shows the Pathfinder an audio excerpt coming from a Quarian Ark that was supposedly delayed in its departure from the Milky Way.
This Ark includes several of the other races from the Mass Effect universe, like the Elcor, Volus, and Quarian, and the conversation ends with the character saying it's impossible to determine the Ark's location for the time being. What does this mean? Well we think that this is a strong hint at what might be coming further down the line for the game.
There's no season pass for Mass Effect: Andromeda, so we don't know how Bioware will address this, but it seems too big a tease to ignore. Would you like to see the Quarians back in the Mass Effect universe?