News of Note—Viacom, Tablo and Twitter

Here are some of the other stories we're following today:

> Viacom is reportedly close to acquiring video conference VidCon. Variety article

> Tablo, the DVR for cord cutters, launched an app Tuesday for Samsung TVs running the company’s Tizen operating system. Variety article

> Alessandro Sabatelli, Twitter's head of AR/VR, is leaving the company 18 months after joining it. Engadget article