"Valve's Steam Families: Game Sharing and Parental Controls Unveiled"

TL;DR
Valve introduces Steam Families, a new program allowing up to six members to share and play games with close family members, replacing the previous Family Sharing and Family View features. Members can access sharable games in each other's libraries, create their own save files, earn achievements, and access workshop files while playing a family member's game. However, some games are ineligible for sharing due to technical reasons, and two members cannot play one copy of a game simultaneously. The program also includes parental controls and restrictions on game sharing.
- Valve Introduces New Steam Family Game Sharing Program Game Informer
- Steam Families opens up game libraries for sharing, with a few caveats Ars Technica
- Steam Families brings shared libraries and parental controls together Polygon
- Steam Families Beta Introduces Parental Controls, Game Sharing, and Getting Banned If Your Siblings Cheat IGN
- Valve launches new Steam Families household game sharing tools Eurogamer.net
Want the full story? Read the original reporting
Read on Game Informer