You’ve provided the answer to your own question, query for meta key _thumbnail_id
to get posts with a featured image:
$args = array(
'meta_key' => '_thumbnail_id',
'posts_per_page' => 3
);
$latest_with_thumbnails = new WP_Query( $args );
You’ve provided the answer to your own question, query for meta key _thumbnail_id
to get posts with a featured image:
$args = array(
'meta_key' => '_thumbnail_id',
'posts_per_page' => 3
);
$latest_with_thumbnails = new WP_Query( $args );