Haven't seen this anywhere else (I might just be living under a rock though), so I wanted to share. If you force touch a contact icon in the messages app, a useful menu pops with quick links to call, message, FaceTime, or send an email. Force touching the convo just shows a peek of the convo. I think this is great. It's always been somewhat convoluted trying to call a contact from the messages app. Apologies if this is already a well known use case.