Use the latest one. You can check and see what is on the board you have coming when it gets there by following the instructions here.
http://circuitco.com/support/index.php?title=Updating_The_Software
And that is also the link for updating the board.
And for the HDMI issues try here
http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI
And you should have gotten your wife one as well!! So selfish of you!!
Gerald