Beginning September 22, 2023, testing time for the GRE will be reduced by half, from nearly four hours to just under two, and the official score turnaround time will reduce from 10-15 days to 8-10 days.
Combined, these changes are intended to provide test takers with a better experience that values their time and reduces anxiety and fatigue, ultimately helping them to complete and submit their applications more quickly.
More information is available from ETS.