A new ESRB listing is now online for Saints Row: The Third Remastered, apparently revealing plans for an updated version of Volition's open-world action/adventure which was originally released in 2011 (thanks Eurogamer). The rating summary does not indicate when this might be released, but does justify the M, Mature 17+ rating it will carry when it is:

This is an open-world action-adventure game in which players assume the role of a criminal syndicate known as the Saints. As players attempt to take over a fictional city and exact revenge on a rival gang, they engage in driving and combat missions to progress the storyline. Players use machine guns, shotguns, swords, rocket launchers, and grenades to kill rival gang members. Players can also attack pedestrians, and in one mission, players shoot at police and civilians to create chaos in a rival gang's territory. One scene prompts players to run over a certain number of pedestrians within a given time; another sequence allows players to dispatch enemies by putting grenades in their mouths. Players can also use chainsaws to hack at enemies, resulting in small chunks of flesh and large splatters of blood. Damage from certain guns can result in decapitation. During the course of the game, female characters are sometimes depicted in outfits that reveal large amounts of their breasts/cleavage or buttocks; characters are occasionally depicted nude, though their nipples and/or genitalia are obscured by blurry pixels. In one sequence, players can walk through an erotic club containing several phallic sex toys and sexual contraptions. Some game environments and dialogue contain drug paraphernalia or other references to drugs (e.g., marijuana leaves and water bongs on a table; a radio DJ telling a caller to try heroin). The words “f**k,” “sh*t,” and “c*ck” appear in the dialogue.