Google has confirmed its latest Android 4.4 KitKat update for Google Glass ahead of a 24-hour public sale later today. The update improves battery life and reliability, but temporarily disables the built-in video calling feature until it can be improved.

The most significant change with this release is support for the latest Android 4.4 KitKat operating system. This allows developers to use the KitKat SDK to build “Glassware” applications and take advantage of the new features within the Glass Development Kit.

The update also introduces a new “photo bundles” feature, which organizes all of the photos, videos, and vignettes in your timeline into bundles so that you can “swipe less and see more.” Users will also find support for photo replies in Hangouts.

Google makes it easier to submit feedback directly from Glass with this release. You can now tap on the info card inside the Settings app to report problems, and if you need help, you can ask for it via email, phone, or within the Explorers Community.

Finally, the update disables Glass video calling — but it will be back. Google says video calling didn’t live up to its high standards, and so rather than shipping a poor experience, it has removed the feature temporarily until it can be improved. It doesn’t know how long that’ll take yet.

The latest Glass update will roll out later this week, Google says.

If you don’t have Google Glass yet and you live in the United States, you’ll have the opportunity to get your hands on it later today. Google will be selling the device to the public for 24 hours, starting at 6 a.m. PDT. It’ll cost $1,500 and supplies are limited, so you’ll need to order quickly.

• SourceGoogle+