AMPS version 6.3.12 is now available, which has some minor improvements and bug fixes.
How to use AMPS 6.3.12
Use the flag -u 6.3.12 to specify the AMPS version when running your atlas-create-XPRODUCTX-plugin commands or with atlas-run or atlas-run-standalone --product commands. You can also specify the AMPS version in the product POM for existing projects.