This isn't "a" new FPGA, there'll be like 50+ (or even hundreds of) SKUs, many will be various BGA/chip scale packages (with different numbers of pins available

This isn't "a" new FPGA, there'll be like 50+ (or even hundreds of) SKUs, many will be various BGA/chip scale packages (with different numbers of pins available) but not necessarily all of them. The Spartan line, being the lowest level of Xilinx's FPGAs, have traditionally had a few versions in TQFP packages. I wouldn't be incredibly surprised if they did with this new version (although it's probably less and less likely with each generation).