Philadelphia-based media company Metro Corp., which publishes magazines such as Boston and Philadelphia, announced yesterday that it is cutting staff as part of a larger corporate restructuring plan “to address the changing media environment and position the company for future growth.”

Announcing the news on bostonmagazine.com, the publisher said seven full-time positions would be eliminated. (the company holds a total staff of 134.) A similar statement posted on phillymag.com confirmed that three of those cuts would come from Metro Corp.’s Philadelphia office.

Poynter yesterday reported that Boston magazine senior editor S.I. Rosenbaum was among those affected by the cuts.

As part of the reorganization, the publisher also said it would unveil a new custom publishing and native advertising platform, CityStudio. That property is expected to debut during the first quarter of 2016.

“Metro Corp. has responded boldly to the changing media landscape in the last few years, particularly with the growth of our digital and events businesses,” Metro Corp. chairman and CEO David Lipson said in the announcement. “As the world evolves, it is essential that we evolve with it. I strongly believe the changes we’re making will allow us to thrive going forward.”

Patrick Kerkstra, who joined Philadelphia as deputy editor in 2014, has been promoted to editor. Philadelphia editor Tom McGrath has been promoted to Metro Corp.’s chief content and strategy officer, and will aid with CityStudio's launch.