The LG UX 6.0 is also coming.
Then, here's a Google translation of the update changelog message from a X600:
You can upgrade to the new OS. When you upgrade your OS
You can experience new features. Mobile on download
Even if you use data, you will not be charged a data fee.
* The notification badge of the app icon has been changed to work in conjunction with the notification in the notification window.
When you clear a notification in the notification area, the notification badge shown at the top right of the app icon
* Apps that let you watch apps, widgets, and app info right on your home screen
A shortcut has been added.
Icon of the desired shape. Various icons have been added to change to .....
To make it easier to find the settings you want,
* The notification settings structure allows you to manage your app's notification settings in one place.
* Background app behavior to improve device performance and battery life
Changed to exclude.
* You can hide the home touch button when you want to see a wide range of magnification while using the app.
* Blue light filter can be set by dividing into 10 steps.
-DTS: Added X3D stereo effect.
* Added flashlight function when listening to music.
* Added the PLAY / LIGHT function when receiving calls.
* The QR code scan function has been added to the camera and the filter type has been varied ...
The menu has been improved.
* Improved to support DTS codec.
You can download it later in Settings> About phone.
Download via LTE network or Wi-Fi
Download via Wi-Fi only
Here's the (probable) new camera interface: