We are glad to share that the Table of Contents feature is included in the R3 2016 release of Telerik Reporting.
You can download the product from your Telerik account and check the release notes
and online help
A sample report demonstrating the feature is available in our online demos
Any feedback and suggestions for further improvement will be greatly appreciated.
Telerik by Progress
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items