If you are interested in getting Cydia updates directly into your Notification Center, you need look no further. Ryan Petrich has created Curiosa to provide you banner notifications for new Cydia updates with some nice configuration options as well for keyword specific updates and refresh intervals.
Check out this video preview from Jeff at iDownloadBlog:
Curiosa is available through Ryan's beta repo http://rpetri.ch/repo/ for free. Drop a comment with your opinions here or on our twitter.