NeWS (R.I.P.) was Sun Microsystems PostScript-based window system for the Sun Workstation. NeWS was a project within Sun (started around 1985) to create a window system to supplant SunView (a very successful kernel-based window system). NeWS was a client-server model window system (like X) but among many of NeWS novel features was the use of PostScript as the language to describe the appearance of objects on the screen. NeWS had many features in common with Display PostScript, but NeWS predates Adobe Display PostScript and was neither connected with Adobe Display PostScript nor endorsed by Adobe. NeWS was not an Adobe product, nor was it a Sun/Adobe joint venture.
As of October 1992, Sun management signed a deal with Adobe to adopt Display PostScript for the Sun. In 1993, Sun finally dropped NeWS altogether. The Sun window system is supposed to start shipping a Display PostScript environment in late 1993.