Google is continuing to make its monthly Glass updates available in a timely manner. The newest version of the wearable firmware, XE7, is now ready to download on the Google Glass Developers page, right alongside the two older downloads. It's a beefy 346MB package, delivered in the usual ZIP format.
XE7 adds a ton of new features for Glass testers and developers, including more varied "ok glass" commands and contextual actions, improvements to search functionality, an updated home screen, and better contact management and sharing. The most notable improvement is probably the inclusion of a web browser, which activates after you choose a search result. YouTube videos can now be viewed directly on the Glass screen as well.
The XE7 over-the-air update should have reached most Explorer units by now. Advanced users can flash the system image above via the standard ADB interface.
Source: Google Glass Developers