Origin News announces a new beta version of the Windows Origin client should now be available, with the OS X beta expected today (thanks VG247). They say this will roll out to the rest of the Origin "community" in the weeks to come, but those who want it now can still opt-in to the beta. Word is this adds streaming support, 64-bit enhancements, and achievement tracking:

After downloading this update, you'll notice that we've revamped the look and feel of the Application Settings menu. For PC users, if you've been broadcasting your gameplay, you'll appreciate the new ability to auto-archive your broadcasts. For you power gamers with muscular 64-bit systems on either PC or Mac, the new multilauncher will give you additional options for taking advantage of your hardware when starting up supported games. Finally, you can now keep track of all the achievements you've completed in Battlefield 3, Mass Effect 3, and Dead Space 3 on your Origin profile page. Start playing those games after updating Origin, and watch your Origin Point total (displayed underneath your name) increase by completing their achievements.