Just saw Homecoming. And (this is a spoiler of the very end of the movie but a kinda obvious one)
that second suit that Tony builds for Peter looked a hell lot like the suit of Morales.
And regarding Miles in the MCU, I don't think we will see him for a long time. I mean what would be the fun in having two teenagers as Spider-Man? It would be really cool to have Morales as a teenager and Peter as a grown up teaching him about being a superhero, kinda like Tony does. Perhaps after Homecoming 3, Miles "becomes" Spider-Man and will protect Queens while Peter goes with the Avengers and deals with some other stuff.