Thank you for the information, Kiril.
We should be able to work with something like this, and we will test it on every upgrade.
var firstDate = new Date("2015-6-6");
$("#datepicker").kendoDatePicker({
change: function() {
if (firstDate !== null) {
debugger;
firstDate = firstDate.toLocaleDateString() + " - " + this.value().toLocaleDateString();
} else {
firstDate = this.value();
}
$("#datepicker").val(firstDate);
}
});