repository pattern and overhead..?
class newsEntity
{
    private $title;
    private $content;
    private dateCreated;
    private $author;
    private $category; // just 1 category possible for simplicity

    # .. Getter and Setter methods ...
}

class newsRepository
{
    public function getNewsByYear ( $year )
    {
        $newsList = array();

        // Some ORM code which fills $newsList with newsEntity objects
    }
}

$repo = new newsRepository();
$news = $repo->getNewsByYear(2011);

foreach ( $news as $item )
    echo $item->getTitle() . " " . $item->getDateCreated();

class newsOverviewDto
{
    private $title;
    private $dateCreated;

    // + Getters/Setters
}

class newsRepository
{
    public function getNewsByYearForOverview ( $year )
    {
        $newsList = array();
        // Some ORM code which fills $newsList with
        // DTOs that contain title and date
    }
}

// Usage:

$repo = new newsRepository();
$newsOverviewDtos = $repo->getNewsByYearForOverview(2011);

foreach ( $newsOverviewDtos as $item )
    echo $item->getTitle() . " " . $item->getDateCreated();