I have installed Photoshop CS6 Extended and updated to Camera Raw 7.1 beta. The Basic adjustments panel in Camera Raw 7 & 7.1 is the same as older versions, lacking the new controls for shadows, highlights, blacks & whites as seen in various tutorials I have watched (Linda.com and Adobe TV. What gives?
Your ACR appears to be using an older process version (most likely 2010).
Go to Camera calibration tab and switch your Process version to 2012. Then you should see the new sliders at their new default value.
That did the trick. Even tho it already said 2012 (current), I chose it again and the sliders now appear.
Moving this discussion to the Adobe Camera RAW forum.