Hi,

It's not supported now. I'll check if we can highlight the newly inserted row so as to show the change in listing.

Also check this …
http://stackoverflow.com/questions/2946412/jqgrid-highlight-the-new-added-row

is this supported as of current? November 3, 2014.
if yes, what is code?

If you wish to show highlight effect, you can include jquery ui script,

<script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>

And have highlight code in afterComplete:

$opt["add_options"]["afterComplete"] = "function (response, postdata) { r = JSON.parse(response.responseText); jQuery('#'+r.id,'#list1').effect('highlight', {color:'yellow'}, 2000); }";
$grid->set_options($opt);

A condition that new record should come in grid list, You can sort grid to decending id, to show newly added record on top of grid.