A growing number of instrument vendors are giving users the ability to customize internal FPGAs, delivering a significant increase in flexibility and speed. While the automated test metaphor since the 1970s has been fixed-definition hardware instruments controlled through flexible programming, this recent trend now allows users to program the hardware definition of the instrument itself. Who is doing this, and how? What may this mean for the industry? Many solutions in PXI and AXIe, but what about traditional boxes? How are these programmed? To find the most succinct summary written, follow the Masters of the FPGA Tour here.