Surely you remember the video that showed you a few days ago the next version of Stack. The day after the developer anounced that he would stop developing free applications. Now he changed his mind. So the work on version 2.2 of Stack is continuing and this application will appear in Cydia soon. One more important thing is that once application is released, it will probably remain available forever.
Here is the video that shows a preview of future AppStore application called Spotify. It will allow users to listen to streaming music from the iPhone. Currently it is in the waiting for approval status.