Niantic Labs CEO, John Hanke, confirmed that a future update of Pokemon Gowill allow the players to transform their PokeStops into Pokemon Centers. Players will be able to visit and add Customization Options to pokestop/ Pokemon Go Centers.
Pokemon Centers will be a place for players to heal their Pokemon and carry out some yet to be announced actions. As for these yet to be announced actions players have already begun to speculate as to what these might be.
For now, players will just have to wait till Niantic makes their next announcement regarding Pokemon Go Centers. In the next major update players should be looking forward to Pokemon Go Trading – Pokemon Training –Pokemon Go Centers & Pokestop Customization.