There currently isn't a way for a form on a sheet that comes on a template to automatically update once their Sheet name is updated, in Smartsheet. Could you make it such? An alternative would be to link a cell to a field in the form that would be pre-populated when a user goes to fill it out.
I agree this would be useful. I'd like there to be a formula that could be in a field of the Sheet Summary so that every time you save a new copy of the sheet template the form link would be in the Sheet Summary field.