Soon after SharePoint 2016 Beta 2 Microsoft has released SharePoint 2016 Release Candidate – the mostly complete version of the new release of SharePoint Server. The release, as stated by blogger and MVP Vlad Catrinescu does not present any new features, but fixes a number of bugs from the previous beta, and it can be installed on top of it.
You can download SharePoint 2016 RC HERE.
Microsoft is still commited to release the final version of the new SharePoint in Q2 2016.
You can read more on Office Blogs.