According to TVShowsOnDVD.com Murder, She Wrote: The Complete Fourth Season should arrive on October 17th, 2006. Can't wait! Here's hoping slimmer DVD cases are used!
Be aware that the Oct 17 date IS NOT OFFICIAL. It's a date we received from someone that has given us good information in the past, but it has no been confirmed by the studio, and it may change.
Why ?! They're awful, IMO. Normal cases are much preferable, the slim ones need to be handled very carefully, if you press them they'll touch the disc itself ! Especially if it's a double-sided disc, but I hear they're thankfully dropping those now. Still, I honestly hope companies abandon slim cases ASAP.