XFree86 4.5.0 is the eighth full release in the XFree86 4.x series.
XFree86 4.x is the current XFree86 release series. The first release in this series was in early 2000. The core of XFree86 4.x is a modular X server. The 4.5.0 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 XFree86 4.5.0, 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 XFree86 4.5.0, and links to related documentation.
XFree86® is produced by The XFree86 Project, Inc through the work of a group of volunteer independent developers. The XFree86 Project is a non-commercial organisation and XFree86 would not exist without the invaluable development contributions of volunteers from around the world.
XFree86 is a registered trademark of The XFree86 Project, Inc.