Google Glass Owners Get Free Hardware Upgrade

Google has started sending out invites to Google Glass Explorer Edition owners, offering them a one-time swap of their device for a new version. Everyone who purchased the original Explorer version prior to Oct. 28, 2013, is eligible for the swap While the swap is entirely optional, it's free and it bring several improvements. According to Google, the new Glass Explorer Edition is a bit faster, more durable, and compatible with upcoming prescription frames. See also: Is Google Glass the Future of Healthcare? The new Glass is also compatible with new accessories; on the other hand, old accessories might not work.