Figured it out. Used templateUrl to build the correct anchor. My page now always contains a link to the most current version of the InfoPath form.
function getTemplate() {
$().SPServices({
webURL: newURL,
operation: "GetList",
async: false,
listName: "Test",
CAMLRowLimit: 0,
completefunc: function(xData, Status) {
var templateUrl = $(xData.responseXML).find('List').attr('DocTemplateUrl');
}
});
} // end function