Google has been keeping all their Android clients well updated lately, and just last night the Android Market saw another update. Google's latest update integrated their popular Google +1 button into the mobile market application. This +1 button has been available for the web based client for quite some time now, and it is great to see it finally make it to the mobile phone. Aside from the new +1 button, Google added a pin-look on the Market. This pin lock makes it so people cannot use your phone and buy apps without first entering your pin.
Those two features are what have been updated into the market, along with improvements and fixes. For those that have not updated manually, expect a notification for an update anytime soon from your phone.