Are there any tools that will detect when new pages are added?

[SEOmoxy]

need help with keeping track of when new pages pop up that might compete internally with already optimized pages.

[firstconversion]

Ask your developers to email you the url of every new page added

[KeriMorgret]

Are you running a content management system like Wordpress? There may be some plugins there that can help tell you. Otherwise, I'm not sure. I'd try possibly a Google Alert for the query site:yourdomainname.com and see if that turns up anything.