I won't spam you or sell your email. I'm capturing your email address, primarily, to keep you up on any changes (fixes or improvements) that happen to the set. I'd also like to let you know when I release other new freebies.
Update (9/30): A few of the icons don't scale well, the first round of updates (map and settings icons) can be downloaded here.
Special thanks to Bryan Clark and Chris Davis.
Background by Matt Gentile, Icondeposit.com