Google Glass announced on Google+ that they have pushed out a new software update to Google Glass users, this version jumps from the old version of XE12 to XE16.

The biggest change is that it updates the OS to KitKat, the latest version of Android. Which means it is the most stable OS and it brings more features for developers to work with when building native Glassware.

Other features include:

Photo Bundles
Send a message with a photo
Smarter Home menu sorting
Sharing to Google+ communities
Play Music Instant Mixes
Easier Wifi setup with Android
Networking help
Improved Glass feedback and troubleshooting

Features removed include:
Video calls
Song search

Here are some photos embedded with Google+:

Also, Google has revised the Glass Developer Docs.

Forum discussion at Google+.