Man I hope iOS 8 isn't a dud. Updated maps app is just that, an App update; nothing more. App updates can happen and bring new features in point releases... We don't need to wait until a new iOS every year to add a new feature to an app (like transit) that should have been there in the first place. Likewise the addition of the Health Book or Text Edit, or Preview or any other app, are just bloody apps. It does not count as an OS update.
I hope iOS 8 refines on the rough edges visually and design language wise from iOS 7. And I also hope they give us some real features in iOS 8, like glance able information, a quick reply feature like OS X and not just for messages but for all types of Apps and correspondence types; a quick reply API really, the ability for the apps to actually talk to each other, an API for Apps to use Siri (which developers have been asking since Siri's release), oh and while you're at it can you please for the love of everything tech, make Siri voice processing local and not network connection dependent so we can use Siri anywhere and not just in LTE areas as well as make the recognition and response at least as fast as Androids if not faster, an API for Touch ID to do things like lock certain apps so that only I can open them by verifying my identity and use touch ID for logging in to a multitude of apps and services, heck I'd even settle for options for a better keyboards by 3rd parties.
Release apps whenever, don't wait until WWDC every year, especially if the apps don't have API's for the developers to use anyway... At WWDC focus on making iOS as a whole better. Please... Seriously, Please.