The next scheduled release in the Marvel Cinematic Universe is July's Ant-Man starring Paul Rudd, Michael Douglas, Evangeline Lilly and Corey Stoll. Director Peyton Reed stepped in for Edgar Wright, who had written a script for Ant-Man before the MCU was a reality. In between Edgar Wright's departure and Ant-Man's production, several drafts of the script were written by writers like Adam McKay, Paul Rudd, Gabriel Ferrari, and Andrew Barrer. Apparently tweaks and re-writes went on longer than we knew about, because Ant-Man will have the first Spider-Man easer eggs of the MCU.
The Sony/Marvel Spider-Man sharing deal wasn't announced until early this year, but Ant-Man will start planting the seeds for the character to make his first appearance in Captain America: Civil War as a fully-formed hero without an origin story retread. In the MCU, by the time Ant-Man occurs, Spider-Man exists.
We've heard an unconfirmed rumor there is "lots of" talk of/references to Spider-Man (they mention the name WEB SLINGER) and OsCorp in the current version of Ant-Man.
Corey Stoll's villainous businessman Darren Cross is attempting to sell the Ant-Man/Yellowjacket weapons technology to other corporations and organizations. The Ten Rings from Iron Man and Roxxon, a Marvel Comics corporation that has been name-dropped in all 3 Iron Man movies, Agents of SHIELD, Agent Carter, Daredevil and a Marvel One Shot. This scene would be an excellent opportunity to introduce OsCorp into MCU. BUT in the end Hydra is involved in this as well.
We won't actually see Spider-Man on screen in Ant-Man, current plans don't even have him in a post-credits scene, that's still saved for Captain America: Civil War.
And remember this is still unconfirmed.