Game Hubs and Groups. Today, a beta version of the update launched, and the first game to show off its new game page is Team Fortress 2.
In order to gain access to the beta of Steam Community, interested parties will need to have unlocked the 'Pillar of the Steam Community' badge. The first 50,000 to do so will gain entry and another invite to share with a friend. Valve says beta access "will increase incrementally until the public launch."