Apple has hired four more high-profile TV executives to join its growing roaster of men and women working on developing video content for the company, according to Variety on Wednesday.

Kim Rozenfeld is joining Apple as lead executive on documentary series development. Rozenfeld comes from Sony Pictures Television where he worked under Zack Van Amburg and Jamie Erlicht before the two left Sony for Apple in June.

Van Amburg and Erlicht also hired away Max Aronson and Ali Woodruff from Sony, as both are joining Apple as development executives. Their exact position at Apple isn’t known quite yet, but Aronson had previously served as Vice President of drama development at Sony Pictures TV, and Woodruff as director of creative affairs. They will both work under Van Amburg and Erlicht.

Finally, Rita Cooper Lee is joining Apple as lead communications for the newly created video content unit. She was formerly working as head of publicity for WGN America. She will be reporting to Tom Neumayr, Senior Director of App Store, Apple Music & Apple TV Public Relations. Cooper Lee is the second exec to leave WGN for Apple, following the hiring of Matt Cherniss in August, who was a president and general manager of WGN America.

These hirings mark a growing trend at Apple who’s not hiding its TV content ambitions, with the Wall Street Journal recently reporting that the company is to spend $1 billion on Hollywood programming over the next year.