[support] Alter node (title) field?

Hello All, This must be a simple thing to do but i can't seem to get my head around it: - I have got a content type 'publication' - A publication can have two possible physical formats: "normal", "electronic" - When a publication has physical format "electronic" i'd like to alter my title field in al my view modes (i use display suite) like this "Some Title (electronic)" I've been trying theme_preprocess_node function but to no avail. I've also tried hook_node_view, but there i have my title field already as markup in an array so i can't just alter the title itsself. I'm very much stuck on a simple thing here i guess. Any help would be greatly appreciated. Thanks beforehand! Best, Toon