1.CAS can overlap previous Data.  Thanks to new technological advances.
2.Bus speeds now go to 66 MHz.
3.Still need CAS.  WHY?  Because DRAM, FPM and EDO are asynchronous.
4.Still need a CAS for each column strobe.
5.Takes tRAC & RAS Precharge out of the critical timing path.
6.Speeds of 6-3-3-3 now available as a four column burst.