I haven’t been a big fan of this series but two potentially big things transpired that may be worth discussing.
spoilers:end of spoilers
1) 616 Miles succeeds in crossing over into an alternate universe to search for Barbara. And the universe he ends up in is...the Ultimate Universe! With an alive-and-well Peter Parker (and Green Goblin)! So the two Miles Moraleses have effectively traded universes.
2) Spider-Man Miles Morales, hurt by Peter telling him that he shouldn’t be Spider-Man (despite Peter’s apologies) ponders leaving the Spider-Man persona behind and becoming “[his] own man.” They seem to be hinting heavily that Miles will adopt a new costumed identity.