JACK THE RIPPER PUBLICATIONS
The Casebook Examiner is an online e-publication that details and analyzes new developments and aspects of the case. There will be six issue a year and the first issue is being offered free.
Well worth a look at is Ripper Notes. You can read some fascinating articles about the various aspects of the case in this excellent publication.
Another excellent publication that offers informed articles and discussion about the Jack the Ripper case is Ripperologist, an online publication that can be accessed via a subscribers login.