It would be welcome if translators could subscribe to notifications of new strings to be localized in a certain file from their translate-dashboard.
(for instance with a simple checkbox available on each line of any file list: e.g. here http://translate.userecho.com/lang/en/ )
This way, they could react as soon as possible when new strings are added to the base language and that needs to be translated...
Customer support service by UserEcho