Version Found: v1.6
Version Resolved and other Known Issues: See
(Xilinx Answer 40469)Tandem PCIe and Tandem PROM are supported with the 7 Series Integrated Block for PCI Express v1.6 core, but it is currently available as Beta version only.
Note: Tandem PCIe and Tandem PROM support as Beta version is currently available in ISE Design Suite only; it is currently not supported in Vivado Design Suite. Hardware validation for both Tandem PROM and Tandem PCIe is still pending. The beta feature could be used to generate the core and see the new ports that are required and some of the new constraints.