A post called Damage Control on the Counter-Strike blog has word that Valve has already nerfed the new revolver included in the recent Winter Update for Counter-Strike: Global Offensive, their teamplay shooter. They explain they would normally gather more information before making such a move, but this situation did not require a lot of extra reflection:

While it typically takes more time to generate enough data to drive an update (and gameplay updates are always a bit disruptive), in this case it’s clear that we got the damage wrong and can respond immediately.

So today we’re updating the R8 Revolver to bring its values to be more in line with other weapons: among other changes, its damage has been reduced and it takes slightly longer to fire.

As experience with other new weapons (e.g., CZ75a and M4A1-S) has shown us, it may require several iterations over a longer period to find the stable values that create interesting strategic choices for players. We’re committed to monitoring usage and adjusting the values as required.