Google has been very conservative about releasing APIs for Google+ and may not even release a full read/write API for its social network before the end of this year. The one API the Google+ team has put its weight behind, though, is the Hangouts API, which gives developers access to Google+'s video chat features. Today, the company announced that it is taking this API out of preview. This means developers can now launch and share their hangout apps with the Google+ community. To launch this feature, Google has partnered with a number of developers, including Aces Hangout, Cacoo, Scoot & Doodle, Slideshare and Clubhouse Challenge by Bravo.
Android users already know about this, but with the latest update to the Google Search app for iOS, Apple users now also get to enjoy this feature.
When Google realizes that you have an upcoming trip on your schedule, it will show you info about your destination, including weather and some tourist info.