"Originally, X.Org 7.4 was set to be released in March of 2008
with features that included XGE (X Generic Events), XACE (the X
Access Control Extension), RandR 1.3, more PCI reworking, XKB 2, a
DRI memory manager, and Glucose. However, many of these features
didn't end up getting integrated into X.Org 7.4."