I'm sorry to say that from now onwards, Jezz is no more. It was a fun app to make, but it needs a lot of work to bring it up to date. iOS 4 (and soon 5) brought a lot of changes and I need to prioritise working on my other apps over Jezz.
For those of you who have purchased Jezz, you will still be able to download it from the Purchased tab of the App Store.