Because it's in Clear-Coating right now & they are not taking any more pre-orders. Once it's ready it will most likely be shown on their home page

Answer is a 2 part:
a Thicker "top" veneer allows them to sand the board flat prior to the cnc process and then again After the cnc/Inserts have been glued in ( which all inserts have Raised Part Numbers on them that have to be sanded off ). A 'thinner' veneer would not allow for a second sanding process. The inserts that Mirco uses he manufactures himself and won't sell to others don't have the raised part numbers, thus Mirco can get away with only 1 sanding. Mirco is also the supplier that CPR was referring to as the ones using Baltic Birch, instead of Hard Rock Maple ( that CPR uses ).....

The reason for doing a thicker "bottom" is so that they have a Choice to choose the Best Side to print on ( grain, blemishes in wood, divots, etc. ) all play a part in which side to Print on. With a thinner veneer on the bottom they would be limited to printing on 1 side only and what ever we get is whatever we get. CPR is looking out for our best interests in providing the best product possible.