I've submitted my App details to iTunes Connect and my app's status is now. "Waiting for upload" - does this mean that my App Name is reserved to me now, or is there more for me to do before this is so?
As soon as you have created your app in iTunesConnect, your name is yours. If you try to create an app with a name that is already in use it will give you an error. Also, you can go in and change the name any time. It will not let you change it to a name that is already used by another developer.