Two different news on this which had come up in local newspapers probably 1-2 months ago.
1) The time table committee was not properly informed/not aware of the same and hence no new trains could be implemented.
2) Another news in another paper says that railways is waiting for the completion of Pollachi-Podanur section [expected to be operational between Jan-March-2017] and then new trains might be started.
Not...
more... really sure how much check they have done before publishing the news