The European Commission has fined Facebook €110 million ($122 million) for “providing incorrect or misleading information” about its 2014 acquisition of WhatsApp.

WhatsApp is rolling out video calling today to its billion-plus monthly users. That’s basically the entire story — if you’d like to use it, update the app, open a chat, and tap the familiar video camera icon in the top-right corner.

Though it’s the biggest messaging application in the world with more than 1 billion active users, WhatsApp has for years lived primarily on mobile phones. That could change significantly from Wednesday, when WhatsApp launched its first desktop apps for Windows 8 and Mac OS 10.9 and up.

Facebook Inc will buy fast-growing mobile-messaging startup WhatsApp for $19 billion in cash and stock in a landmark deal that places the world's largest social network closer to the heart of mobile communications and may bring younger users into the fold.