Okay, okay - it's a virtual reality headset, powered by your smartphone, and Google's updating the headset to accommodate phones up to six inches large. The system is called "Google Cardboard" (fittingly), and it's been Google's main point of entry for virtual reality since last year's developer conference.
As The New York Times' Farhad Manjoo puts it:
Cardboard VR is classically Googley: cheap hardware, do it in software, make it for everyone.
Alongside the new headset, Google announced a variety of virtual reality initiatives. First up is a virtual tourism application aimed at schools. It's named "Expeditions," and it's a fully integrated system for teachers and students to travel together around the world, under the oceans and into space - all in VR, of course. The system comes in a cardboard box, as Google demonstrated in this intro video:
While students use the headset to, say, explore the Great Wall of China, the teacher - using a tablet - is able to guide the experience.
People are also freaking out about Expeditions:
Google's VR Explorer project seems like an amazing opportunity for education and homebound traveling. #io15
And they should be! Expeditions intends to enable inexpensive field trips to children all over the world.
Even better, Google's creating a VR-ready version of YouTube for use with its Cardboard headset, and working to create 360-degree video with its "Jump" initiative - a hardware and software set that makes it easy to film and produce 360-degree videos.
The initiative is already supported by the world's leading action camera company, GoPro, and will be supported by the upcoming 360-degree camera that GoPro announced earlier this week.