Straight from TheSpicyChicken
The SDK is out and it's ON. I'm going to go at this full throttle as soon as I get back from a little road trip. The new customize will be out next week, probably. I'm going to have it do everything I can think of making it do, so if you have some requests for features, email me with "Customize Feature Request" in the subject (firstname.lastname@example.org).
Also, Customize is going to remain freely distributed software through Installer, however, if I choose to distribute through iTunes there may be a $1 charge.
Let's have some fun!