Hi Manasa, Andrew,
Thank you for your feedback on what you're looking for in a navigation API. Currently we have a number of customers who have built their own navigation experience with ArcGIS Runtime, but this required quite a lot of custom work to do things like off-route detection, snap to route, automatic route recalculation and support maneuver announcements in multiple languages. Of course we'd like to make this process easier for developers by providing out of the box navigation capabilities. At this stage we plan to introduce a navigation API into ArcGIS Runtime in a release in the latter half of 2019.
Hope this helps,
-Rex