Android/iOS: Today, Google added the ability to quickly share your location to Hangouts. When someone asks "Where are you?" you will now be prompted to share your location — which is better than keeping location sharing on all the time.
The update also brings several new features, including a "last seen" timestamp to let you know when a user was last active. There are also some cosmetic changes, including sticker packs and filters for video calls . The updated app is rolling out to Android and iOS today, while the "last seen" timestamp will be added in a server-side update over the next few weeks.
Hangouts [iTunes App Store]