Hi can you really possess a wordpress plugin/development feature where basically update images on my small page the wordpress website gallery section updates instantly?

Yes, you'll be able to write a wordpress plugin if Wordpress offers some kind of API (I'm not sure Wordpress..but here is a linkn for their APIs http://codex.wordpress.org/WordPress_API%27s). You can start here with learning the Graph API (http://designers.facebook.com/paperwork/reference/api/) and just how to publish images to some page's album. After that when you have that working, then learn how to also mix publish individuals images to Wordpress via their API.