X11R6.8.1 is the eighth full release in the X11R6 series.
X11R6.8.1 is the current X.Org Foundation release series. The core of X11R6.8.1 is a modular X server. The 6.8.1 version is a new release that includes additional hardware support, functional enhancements and bug fixes. Specific release enhancements can be viewed in the Release Notes.
Most modern PC video hardware is supported in X11R6.8.1, and most PC video hardware that isn't supported explicitly can be used with the "vesa" driver. The Release Notes has a table showing the drivers provided with X11R6.8.1, and links to related documentation.
The X.Org Foundation X releases are produced by the X.Org Foundation. The X.Org Foundation has been formed as a Delaware corporation organized to operate as a scientific charity under IRS code 501(c)(3) to chartered to develop and execute effective strategies which provide world-wide stewardship of the X Window System technology and standards. Membership in the X.Org Foundation is free to all participants. Applications for Membership are now being accepted, and active participants in the further development of the X Window Technology are invited to complete a membership application. The X11R6.8.1 codebase forms the second X window system release since the formation of the X.org foundataion and includes code from the X Consortium, the Open Group and the XFree86[tm] project. This release is dedicated to the greater X community, developers and users alike.