I wondered when mram would pop up on a.org... this is a massive step for memory technology... Though the Amiga will neverget to use such a technology... it is certainly possible that it will replace all other kinds of RAM (if they can get the speeds up), and will replace all ROMS/Flash if they can get the densities up.
Hybrid Hard Drives will benefit... though they need about 2000 times the 512K curently being manufactured :-)