A small change to remember when looking to upgrade to SQL & SSRS 2016 is a change to the Report Manager URL format.
If you have any apps or custom scripts that build or use existing report URLs (for 2014 & below) you should be ok as the old format is still valid (…for now?) & appears to redirect internally, rendering the report with the new URL.
Here’s an example:
up to 2014: http://……/Reports/Pages/Report.aspx?ItemPath=%2fFOLDERNAME%2fREPORT+NAME&ViewMode=Detail
You may be happy to hear though that the ReportServer URL format remains the same.
PS. As updated in this previous post, this issue/quirk still applies in 2016! http://craigporteous.com/2016/03/ssrs-report-name-case-driven-from-url/
Hope this helps!