is thair any information final update oreo in s8

when will Android 7.1.2 rolling out In Samsung S8, its too much time,

why its to much late to update security patch update in every month. what the logice to get in middle of that month.

in starting i set my coustum wallpaper , than wallpaper was adjust like infinity display and move as screen movie in left or right. but now I set my lots of wallpaper but infinity effect was can't working how to resolve it