With little warning or fanfare, Valve has implemented a new policy on Steam Workshop, the platform’s hub for user-made mods, that requires any new submission must first be approved by a moderator.
First sighted by Reddit user r/TanookiSuit3 on the CS:GO subreddit, and reported by PCGamesN, an image captured by TanookiSuit3 shows a new banner on Steam Workshop over a new submission.
Source: IGN.com Steam Workshop Submissions Now Require Moderator Approval