zentao/extension/ipd/misc/ext/lang/en/zentaobiz.php

<?php
$lang->misc->annualDesc      = 'The Annual Summary feature is now available (Report -> Annual Summary). <a href="%s" class="btn btn-mini btn-primary">View now</a>';
$lang->misc->zentao->version = 'Standard %s';

unset($lang->misc->zentao->about['bizversion']);