Confusingly or perhaps not depending how you view it, Microsoft is now migrating community support again, this time from Yammer to the Office 365 network (e.g. https://network.office.com/t5/SharePoint/ct-p/SharePoint). Their rationale is you had to be a member of the Yammer group in order to access support, but the new 365 network is open (and indexable). Makes sense, sort of.