Unity 5.1.1f1 - Rigidbody 2D no options "Fixed Angel"

Hi, I installed in yesterday Unity version 5.1.1f1 and I noticed that when I make a 2D project, the Component is not an option “Fixed Angel”. Could someone help me restore it.

48602-no-fixed-angel.png

It’s been changed a bit.
To achieve the same result, open the “Constraints” dropdown-menu at the bottom of the rigidbody and check the “Freeze rotation Z”.