Try this, using DateTime()
rather than date()
:
<?php
$today = new DateTime();
$date_fr = DateTime::createFromFormat('Ymd', get_field('date_de_sortie_fr'));
?>
<span>
<?php
if($date_fr > $today) echo "Soon: ";
echo $date_fr->format('Y-m-d');
?>
</span>
NOTE This requires that you store the date field in Ymd format.