There is an increasing amount of Windows 10 Technical Preview information available on microsoft.com, here are some of the resources focused on the Insider Preview.
Windows 10 Enterprise Insider Preview system requirements
What’s New In Windows 10
- Device Guard overview
- Device management overview
- Enterprise Data Protection overview
- Microsoft Passport overview
- Provisioning packages overview
- Untrusted font blocking overview
Windows 10 Enterprise Insider Preview: FAQ for IT professionals
Try it out: Windows 10 Enterprise Insider Preview
How to use Windows 10 Insider Preview
Release notes: Important issues in Windows 10 Insider Preview