RSAT is one of those “must haves” for server management and scripting. It just makes work easier.
I early tested Windows 10 and there was a great deal of complaining when the preview release of RSAT stopped working. I even expressed concern over this and promptly reserved a survey about what I thought of the new look. They probably just “rolled their eyes” when I responded with I don’t care about “eye candy” when RSAT doesn’t work.
Microsoft’s response was it would be a couple weeks after RTM. Sounds hopeful but they tend to align RSAT with the server release.
Will this be the case or does a couple of weeks in Microsoft speak mean next year?
Rather annoying and it does give thought to downgrading back to Windows 8.
-edit-
RSAT was released with the preview of 2016. Things are right in the Powershell universe again.