Here are the brief details:
Fixed Wifi issue
GPS improved
Improved HDMI out
Revamped look -notifications panel
Camera Interface tweaked for smoother transition
but apparently no face unlock feature, (yet)
http://nvonews.com/2012/03/31/asus-transformer-prime-firmware-update-will-make-it-more-efficient/
Are you still having major issues after this update?
