Team Calendar alternative and link to work items

We've started using the Team Calendar, but was looking for something which could link to work items and dates so we can see how things are planned out in a calendar month(s) view by iteration cycles. 

Ideally, we only want to update the work item e.g due date which will sync across to the calendar. 

I have tried looking for an extension with no luck, and seeing if someone has found a solution.