Windows Server 2016 and System Center 2016 are GA
Windows Server 2016 is available for evaluation and will be on the October price list. Volume licensing customers will be able to download fully licensed software at General Availability in mid-October.
Windows Server 2016 also comes with the built-in support of containers and commercial version of Docker engine without additional charge!
TIP: I’d not recommend to use evaluation version in production. Wait while fully licensed media becomes available.
Azure Stack Technical Preview 2
In fact, Azure Stack TP2 announcement was described earlier in this blog post (TP2 rolled out for some “vip” customers). At Ignite MS confirmed GA for Azure Stack TP2.
More info about this announcement: New ideas, new solutions, new technical preview of Azure Stack
SQL Server supports Storage Spaces Direct
SQL Server 2016 will support deploying databases on Storage Spaces Direct (S2D).To build up S2D you need from 2 to 16 servers with local-attached SATA, SAS, or NVMe drives and dedicated network between hosts (10+GbE with RDMA is recommended)