Latino Review has heard an "unconfirmed rumor" that there will be several Easter eggs in Ant-Man referencing to Spider-Man. These are supposedly among the various tweaks and changes made during production.
Latino Review state that Ant-Man will plant “plenty of seeds” to usher in Spidey's big debut in Captain America: Civil War.
And while they don't say how Spidey will be referenced, they do suggest that Oscorp could come up in a scene involving Ant-Man's main antagonist Darren Cross (Corey Stoll) trying to sell the Ant-Man/Yellowjacket technology to other corporations and organization, like the Ten Rings (Iron Man) and Roxxon (Agent Carter, Daredevil).
Spider-Man will headline a new solo film set for release on July 28, 2017. And Ant-Man will hit theaters on July 17th.