This has been asked before on a couple of occasions; while there have been a couple of carved top Spalted Maple bodies on the Showcase in the past, pieces of Spalted Maple that are both thick enough and solid enough to CNC a carved top are pretty rare, and will bring a steep price.
As far as the laminate tops go, there will always be more tops available in 1/8" lams than in 1/4" lams for hollow bodies and fewer still 5/8-3/4" for carved tops. This is in large part due to declining availability/increasing prices for exotic woods and the reason Warmoth developed the DL Quilt tops.