X11 uses port 6000, though some systems use port 6001. Others may involve additional ports; however, such systems are relatively rare. What is X11UseLocalhost?

Module: Modules can be loaded into the XServer at startup to facilitate things like fonts and 3D graphics. The X11 protocol design, led by Scheifler, was extensively discussed on open mailing lists on the nascent Internet that were bridged to USENET newsgroups. Gettys moved to California to help lead the X11 development work at WSL from DEC's Systems Research Center, where Phil Karlton and Susan Angebrandt led the X11 sample server design and implementation. X therefore represents one of the first very large-scale distributed free and open source software projects. That seems to make some rough SWAGs on timeline. Looks like mine isn't totally unreasonable and with this, I would guess that even if Plasma 6 dropped early than Nate predicted that they would not be time for proper QA in rawhide prior to Fedora- 39 release targets. So my thinking is that it's very unlikely to make Fedora 39, but could possibly be out in time for Fedora 40. Would you guess similarly?Tveten, Julianne (October 11, 2015). " "Tomato" versus "#FF6347"—the tragicomic history of CSS color names". Ars Technica . Retrieved October 11, 2015. Scheifler, Gettys and Ron Newman set to work and X progressed rapidly. They released Version 6 in January 1985. DEC, then preparing to release its first Ultrix workstation, judged X the only windowing system likely to become available in time. DEC engineers ported X6 to DEC's QVSS display on MicroVAX. Robert W. Scheifler and James Gettys: X Window System: Core and extension protocols: X version 11, releases 6 and 6.1, Digital Press 1996, ISBN 1-55558-148-X

I mean, this isn't just an update to a DE here but an entire display server, one that still has issues on some cards and setups. Garfinkel, Simson L. (November–December 1988). "A Second Wind for Athena" (PDF). Technology Review . Retrieved 25 January 2016. Dedicated (hardware) X terminals have fallen out of use; a PC or modern thin client with an X server typically provides the same functionality at the same, or lower, cost.

Conventions

Microsoft Windows is not shipped with support for X, but many third-party implementations exist, as free and open source software such as Cygwin/X, and proprietary products such as Exceed, MKS X/Server, Reflection X, X-Win32 and Xming. In January 1997, the X Consortium passed stewardship of X to The Open Group, a vendor group formed in early 1996 by the merger of the Open Software Foundation and X/Open.