What are the features/limitations of a purchased license?
A purchased license allows you to target all Xilinx CPLD and FPGA devices, and run all Xilinx applications (including bitstream generation). A purchased license does not expire. However, some purchased licenses do contain a version limit (Typically one year after the purchase date). In this case, a user will be required to obtain a new license when updating to a new version of software released after the version limit month.