Two years ago, Montreal’s La Presse invested $36 million in a carefully researched and highly tested tablet app designed to command print-sized ad rates and long, newspaper-like browsing and engagement. How are they doing? The week of June 15-18, NetNewsCheck will publish a Digital Deep Dive on La Presse+, the app its publisher says will keep his company in the “mass media” business. Stories will explore the vision, the design and the marketing of LaPresse+, as well as the vast changes the app has wrought in the newsroom and the news storytelling process. Premiering Monday, June 15.