As an aside, I'm going to detail the process for others that may stumble across this, as apparently it may not be obvious how to replace a theme with an existing version on the theme site if you're the original author.
The newly uploaded theme will be automagically replaced by the updated version if the upload credentials (author, theme name, submitting address) are the same, if any one of those fields differ, it will be uploaded as an entirely different theme.
[Saint]