PS4 is finally allowing crossplay. Heres the link. While Sony has announced a beta for their cross-play feature, please keep in mind that the beta does not come with any date for being made available in general. ...

Does EA do cross platform?

The future is now. EA are finally enabling cross-platform play for a title. This could be the start of a gaming revolution.

Is Absolver cross save?

Absolver is not on Xbox. Street Fighter 5 is PS4/PC only and that game has cross-play so they're not 100% opposed to it.