Do we know what the update is? Mine is updating now but not sure if it is just a security update or software. Just went to Asus site. This is what the update consists of:
ASUS ZenPad S 8.0 (Z580CA) Firmware: V5.5.7 (for WW SKU version only)
Improved Item:
1.Update apps in the following:
a.MobileManager
b.MyASUS
c.SoundRecorder
2.Update Google security patch
3.Bug fixes