As of today, a new version of Steam is available through a public opt-in beta, open to all Steam users. This Steam update provides several major upgrades to the platform's core functionality. We've overhauled the Steam user interface to enhance the way you already buy and play games, adding more info about the things that matter — getting games, playing them with friends, and staying current in the gaming world.I'll update this post to leave my impressions tonight when I am back at home.
If you already have Steam installed on your computer, you can take part in the beta by clicking this link and then selecting "2010 UI Update" under Beta Participation. If you don't have Steam installed, download it today.
I've installed the update. It looks very clean. The major difference can be noticed on the My Games screen, where the ugly old list of games has been replaced by a fancy new list of games. When a game's name is clicked on the new list, a basic description, screenshot, handy list of links, and your total playtime for that game is displayed. For example, Left 4 Dead 2 from my Steam install: