UG631 Table 2-1 (page 8) states that 'All' Zynq and Artix-7 devices are supported in ISE.
However, in Project Navigator I am only able to select XC7Z010, XC7Z020, XC7Z030, and XC7Z045 Zynq devices and XC7A100T, and XC7A200T Artix-7 devices.
The newer Zynq devices (7Z015 and 7Z035) are not supported, and the newer Artix-7 devices (7A15T, 7A35T, 7A50T, 7A75T) are not supported.
Why is this the case?
At the time of the ISE 14.7 release, all of the Zynq and Artix-7 devices that had been released at that time were supported.
ISE supports the XC7Z010, XC7Z020, XC7Z030, and XC7Z045 Zynq devices and the XC7A100T, and XC7A200T Artix-7 devices.
Because 7 Series was a transition from ISE to Vivado, subsequent devices (for example A15T, 7A35T, 7A50T, 7A75T, 7Z015 and 7Z035) that were released after the ISE 14.7 release are only supported in Vivado.