"...the Profiles of up to 500,000 Google+ accounts were potentially affected. Our analysis showed that up to 438 applications may have used this API"

"This data is limited to static, optional Google+ Profile fields including name, email address, occupation, gender and age."

It is also including a lot more than what they said above:

The json per profile is as follows:

{ "kind": "plus#person", "etag": etag, "nickname": string, "occupation": string, "skills": string, "birthday": string, "gender": string, "emails": [ { "value": string, "type": string } ], "urls": [ { "value": string, "type": string, "label": string } ], "objectType": string, "id": string, "displayName": string, "name": { "formatted": string, "familyName": string, "givenName": string, "middleName": string, "honorificPrefix": string, "honorificSuffix": string }, "tagline": string, "braggingRights": string, "aboutMe": string, "relationshipStatus": string, "url": string, "image": { "url": string,

  },
  "organizations": [
    {
      "name": string,
      "department": string,
      "title": string,
      "type": string,
      "startDate": string,
      "endDate": string,
      "location": string,
      "description": string,
      "primary": boolean
    }
  ],
  "placesLived": [
    {
      "value": string,
      "primary": boolean
    }
  ],
  "isPlusUser": boolean,
  "language": string,
  "ageRange": {
    "min": integer,
    "max": integer
  },
  "plusOneCount": integer,
  "circledByCount": integer,
  "verified": boolean,
  "cover": {
    "layout": string,
    "coverPhoto": {
      "url": string,
      "height": integer,
      "width": integer
    },
    "coverInfo": {
      "topImageOffset": integer,
      "leftImageOffset": integer
    }
  },
  "domain": string

}

(from https://developers.google.com/+/web/api/rest/latest/people)