First of all,let's see one of the three new wallpapers of Build 10154.
Very pleasing to eyes,Yeah.But how about this? :) :)
I like this very much! What's your favorite wallpaper for Windows 10?
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But who said that the next public build of Windows 10 will be the RTM? see the picture below.
I don't know who this guy is,just go to the twitter and search "WZor",you will know more.