How does this affect me?

Power users / Consultants can use the PnP cmdlets and Provisioning schema which are available in version 2.25.1804.1 in the PowerShell mappings.

What do I need to do to prepare for this change?

PnP states to be backwards compatible, our advise is to test your PnP provisioning templates against this version locally in PowerShell.

When will this be released?