10 bit color depth AVC or HEVC in AME

Hello, I'm trying to create UHD files in Adobe Media Encoder (2015.2 release, OSX10.11.1).  These are the specs I'm trying to meet -

AVC 2160p24

.mpg or .ts

AVC Profile High10 or High422

AVC Level 5.1

Color depth 10 bits

or

HEVC 2160p24

.mpg or .ts

HEVC Profile Main10

HEVC Level 5.0 High Tier

Color depth 10 bits

The problem is I seem to only be able to get 8 bit color depth.  Does this release of AME support 10 bit or is it hidden in a setting I might be missing?

Thanks for your help!