The first wave of Google Glass Explorers have received an invitation allowing them to swap out their original Glass pair for the newer/improved version of Glass.

Google is also allowing its explorers to choose a different color. The invitation also said that the “swaps will be first-come, first served for each color”. I am personally going to keep Shale, it is still my favorite color for Glass. Explorers don’t have to swap their Glass but the Glass Team recommends they do because future accessories or features might not work with the first version.