Track amount of time a work item is in a state

Thanks, it appears there is significant work being done in RTC 4.0 to address kanban:
https://jazz.net/projects/rational-team-concert/release-plan/#themes

Here is the direct work item:
https://jazz.net/jazz/web/projects/Rational%20Team%20Concert#action=com.ibm.team.workitem.viewWorkItem&id=170002

My new question:
I'd like the the ability to display the length of time (hours) a work item has remained in a particular state. This should be done via an output column in the results of a query. For example: Show me all high priority story work items in the current iteration that are blocked, and sort them by length of time in current state

Will this be possible with the kanban improvements?

Is there any way to report or have a dashboard to show the average amount of time a set of work items (found by a query) resides in each of the work item's states?

This is used to reduce lead time in Kanban or Lean based methodologies.

You can make your own report to run on data from a query using birt. The moves in transition can be found in the FACTs dataset. So yes that should be possible.