'WHATS NEW' HOME PAGE FEATURE FOR SHOPS

On our home pages we all have a special offer section or most popular etc we would love a what new feature but not one where you tick the product in and out one that automatically puts products that have been recently add to the site and then removes these products after a set amount of day set by you in the feature IE if you add new stuff regular 14 days not so regular 30 - 60 days. This would be brillaint