The editors do support inline footer's but you can't use an external footer template yet.

Example template:

<script type="text/template" id="datepicker-footer-template">

    "Today: #:kendo.toString(data, 'yyyy-MM-dd')#, Week: #:kendo.recurrence.weekInYear(data,kendo.culture().calendar.firstDay)#"

</script>

Suggestion to add a footer-template configuration option like this:

<input name="Date" data-role="datepicker" data-bind="value: Date" data-format="yyyy-MM-dd" data-week-number="true" data-footer-template="datepicker-footer-template"/>

Jan