This answer record serves as the Vivado 2017.3 tool update 1 (2017.3.1) Release Notes, and contains links to information about what is included in the update.
The Vivado 2017.3 tool update 1 (2017.3.1) addresses the following issues:
Vivado 2017.3 Update 1 provides:
For designs leveraging these devices, Xilinx recommends installing this update.
For all other devices, please continue to use the Vivado 2017.3 release.
Downloading and installing the Vivado 2017.3 update (2017.3.1)
Known Issues specific to Vivado 2017.3 update 1 (2017.3.1)
|On date of release there were no known issues specific to the Vivado 2017.3.1 release.|
For Vivado 2017.3 known issues see: (Xilinx Answer 68923)
For known issues related to a specific IP, please search the support site for "Known Issues" and the IP name.