Python 3.7.1rc2 and 3.6.7rc2 are now available. 3.7.1rc2 is a release preview of the first maintenance release of Python 3.7, the latest feature release of Python. 3.6.7rc2 is a release preview of the next maintenance release of Python 3.6, the previous feature release of Python. Assuming no further critical problems are found prior to 2018-10-20, no code changes are planned between these release candidates and the final releases. These release candidates are intended to give you the opportunity to test the new security and bug fixes in 3.7.1 and 3.6.7. We strongly encourage you to test your projects and report issues found to bugs.python.org as soon as possible. Please keep in mind that these are preview releases and, thus, their use is not recommended for production environments.
You can find these releases and more information here:
Python core development news and information.