On the Dashboard screen you can check iteration's burndown by any of the following measurements: Story estimate, Task Estimate/Count/Work Remaining. Trend and Actual lines are presented and at any moment you see how much work has to be completed till the end of the iteration.
In the reports section we have presented a set of burndown reports, which include the calculated end date based of the current trend (check attached screenshot).
I will add feature request item in our TeamPulse project to include the estimated completion date next to the burndown on the Dashboard so that information could be used on a daily basis.
the Telerik team