The Windows 10 Preview is here
The Windows 10 Preview is now available for download at MSDN or here: http://windows.microsoft.com/en-us/windows/preview
If you prefer to use the Enterprise Edition you should get it from here: http://www.microsoft.com/en-us/evalcenter/evaluate-windows-technical-preview-for-enterprise or http://technet.microsoft.com/en-us/windows/dn783436
You can download the 10-page Windows 10 Preview guide here: http://www.microsoft.com/en-us/news/download/presskits/windows/docs/windowstechnicalpreviewqg.pdf
You can download the Remote Server Administration Tools for Windows 10 Preview here: http://www.microsoft.com/en-us/download/details.aspx?id=44280
You should visit the Windows Team blog frequently for updates about the Windows 10 Preview: http://blogs.windows.com/