Final season of HAVE GUN - WILL TRAVEL coming out on DVD May 13th, in 2 parts. There's no information as to the reason for the delay.
In addition, David Mamet has been asked to write a reboot of the series:
QuoteDavid Mamet To Write CBS Reboot Of 'Have Gun - Will Travel'
Since CBS cancelled his series “The Unit” in 2009, David Mamet hasn’t had a lot brewing on the small or big screen -- his last feature-length film was the 2008 MMA drama “Redbelt.” But the acclaimed playwright has some new television work in the pipeline in the form of a reboot of the classic western series “Have Gun - Will Travel.”
There’s been talk about a reboot of the 1957 CBS series before, with one of the stranger takes being an Eminem-starring film set in the modern day, but it looks like the network was impressed enough by Mamet's pitch that they’ve put the project into development, with Mamet to write it and possibly helm the pilot. The original series followed Paladin, a Civil War veteran and top-notch gunfighter who becomes a “gun for hire” and scours the west looking for situations that required his particular expertise. He “preferred to settle problems without violence but stood his ground when provoked.” ...
Here's the link:http://blogs.indiewire.com/the…-gun-will-travel-20120822
Ignore the Eminem rumour. That's from 2008, years ago and it no longer applies to the 'rap singer' protagonist idea. Let us hope. It's likely to be set in the current era, though.