There is a new landing page for Windows Hello for Business technical documentation--https://aka.ms/whfbdocs--and some new guidance as well, including:
Minimum prerequisites for each deployment scenario
A planning guide
On-premises certificate trust deployment information
FAQ about Windows Hello for Business
More documentation is under development so if there is guidance you need to successfully deploy Windows Hello for Business in your organization, let me know and I'll get your feedback to the people writing the documentation.