Hi KD,
At this time, we do
not have a specific timeline for when this feature will be implemented as our
development priorities are determined by customer demand. If you would like to
show your support for this feature, we encourage you to add your vote on the below
link.
Feedback link : https://www.syncfusion.com/feedback/13359/stacked-spline-series
If you have any
additional specifications or suggestions for this feature request, please feel
free to leave them in the comments section of the feedback link. This will help
us to understand how you would like to use it and how we can improve it.
Regards,
Baranibharathi P.