CNBC: If you missed this year’s upfront presentations — the annual events where linear TV networks trot out their upcoming programming for potential advertisers –here are some key takeaways: This year, several sources say they expect the upfront broadcast and cable ad inventory buying markets to be about 1 percent to 2 percent lower than last year. Plus, many networks reaffirmed their commitment to evolving to fit the digital space by offering new advertising options that allow brands to target consumers on different devices using the data that they and their partners glean through various platforms.