PowerShell was completely restructured and published on GitHub; it can be found at https://github.com/PowerShell/PowerShell:
And new documentation was added at https://docs.microsoft.com/en-us/powershell/:
You can just clone the repository with the following Git command:
git clone --recursive https://github.com/PowerShell/PowerShell.gitThere is also a contribution guideline available, which can be found at https://github.com/PowerShell/PowerShell/blob/master/.github/CONTRIBUTING.md. It contains some information about working with Git and how to create pull requests.
To be even more connected with the community, the PowerShell Team has set up regular open PowerShell Core Community Calls. In these calls, RFCs, feature requests, and contentious bugs are discussed. The team will also provide a quick update about the status of the project and the direction it is headed in. At the following link, you will also find the previously recorded community calls and an ICS file for your calendar application: https://github.com/PowerShell/PowerShell-RFC/tree/master/CommunityCall.