Animated iOS 12 Cellular Network Icon (bars)

Hi,

I’m on the iOS 12 public beta on my iPhone X.

Today, I noticed my cellular network icons (the signal strength bars) are now animated. The animation flows from left to right. I can’t find anything that explains what the animation means. The animation only appears on a normal screen (springboard) not on app screens or within settings.

I made a short screen recording to show the animation. If you know what this means l’d love to know.

Here’s the video screen recording: