Looking at the train number, it appears that it would be run by Central Railways. Also by the look of timings, it is clear that it shares its time slot with the Ernakulam-Pune Superfast express which also runs twice a week. So its kind of sure that even after introduction, highly unlikely that either of the trains frequency would change .....since 4 days in a week there would be trains to Mumbai/Pune with the same set of timings.