Hello,

Microsoft vient de mettre à disposition (Disponible sur votre abonnement Technet / Azure) la version Technical Preview de Windows Server 2015.

Ci-dessous la présentation des principales nouveautés de cette édition:

• What’s New in Active Directory Federation Services. Active Directory Federation Services (AD FS) in Windows Server Technical Preview includes new features that enable you to configure AD FS to authenticate users stored in Lightweight Directory Access Protocol (LDAP) directories. For more information, see Active Directory Federation Services Overview.
• What’s new for Hyper-V in the Technical Preview. This topic explains the new and changed functionality of the Hyper-V role in Windows Server Technical Preview, Client Hyper-V running on Windows 10 Technical Preview, and Microsoft Hyper-V Server Technical Preview.
• Windows Defender Overview. Windows Defender is installed and enabled by default in Windows Server Technical Preview, but the user interface for Windows Defender is not installed. However, Windows Defender will update antimalware definitions and protect the computer without the user interface. If you need the user interface for Windows Defender, you can install it after the operating system installation by using the Add Roles and Features Wizard.
• What’s New in Remote Desktop Services in the Windows Server Technical Preview. For the Windows Server Technical Preview, the Remote Desktop Services team focused on improvements based on customer requests. We added support for OpenGL and OpenCL applications, and added MultiPoint Services as a new role in Windows Server.
• What’s New in Storage Services in Windows Server Technical Preview. This topic explains the new and changed functionality of Storage Services. An update in storage quality of service now enables you to create storage QoS policies on a Scale-Out File Server and assign them to one or more virtual disks on Hyper-V virtual machines. Storage Replica is a new feature that enables synchronous replication between servers for disaster recovery, as well as stretching of a failover cluster for high availability..
• What’s New in Failover Clustering in Windows Server Technical Preview. This topic explains the new and changed functionality of Failover Clustering. A Hyper-V or Scale-out File Server failover cluster can now easily be upgraded without any downtime or need to build a new cluster with nodes that are running Windows Server Technical Preview.
• What’s New in Web Application Proxy. Web Application Proxy now supports preauthentication for applications using the HTTP Basic protocol, wildcards in external URLS of applications, redirection from HTTP to HTTPS, use of pass-through authentication with HTTP applications, publishing of Remote Desktop Gateway apps, a new debug log, propagation of client IP addresses to backend applications, and improvements to the Administrator console.
• What’s New in Windows PowerShell 5.0. Windows PowerShell 5.0 includes significant new features—including support for developing with classes, and new security features—that extend its use, improve its usability, and allow you to control and manage Windows-based environments more easily and comprehensively. Multiple new features in Windows PowerShell Desired State Configuration (DSC) are also described in this topic.
• What’s New in Networking in Windows Server Technical Preview. With this topic you can discover information about new networking technologies, such as Network Controller and Generic Routing Encapsulation (GRE) Tunneling, and new features for existing technologies, including IP Address Management (IPAM), DNS, and DHCP. Detailed information about what’s new is available for these networking technologies:
  • GRE Tunneling in Windows Server. This preview release introduces a new feature that enables Generic Routing Encapsulation (GRE) for the Windows Server Gateway.
  • What’s New in IPAM in Windows Server Technical Preview. IPAM support for DNS is greatly enhanced.
  • What’s New in DNS Server in Windows Server Technical Preview. The DNS Server role includes enhanced logging and a new policy based feature for DSN response management.
  • What’s New in DNS Client in Windows Server Technical Preview. Window DNS Client provides enhanced support for computers with more than one network interface.
  • What’s New in DHCP in Windows Server Technical Preview. The DHCP Server role no longer supports Network Access Protection (NAP).

Source: http://technet.microsoft.com/en-us/library/dn765472.aspx