Only hinted. With Sophia encouraging Sam and Ellie to get together, and Ellie's appearance after the concert and what I hear is a kiss on the cheek, everything appears to be set up for Sam to make an appearance at the start of a branch of the Ellie route. Logan and Jules have (I believe) both been confirmed to appear for the start of their branches.
Whether or not he has an event in his own right on PD16, I don't believe anyone has asked L&P yet.
What do you guys think of Sam x Ellie?
It seems that L&P wanted to give more hetero options to Ellie, but to me it came out of nowhere.
When is Sofia that puts the couple together, like Dylan x (... I don't remember... Julia?), it makes me lose interest so hard, it gives the "romantic route" kinda of feeling, not what I'm expecting from that mainly corruption game.
Not that I don't like the existence of those routes in game, diversity is good, I just skip it.
Now, a random couple that I would like to see coming out of nowhere is Sam x Patricia! Does someone know if it's ever been hinted at some point?