Due EEPROM alternative? SD?

Any update on this Library?


The official EEPROM library is still listed in the Standard section of
the Reference Library information, rather than in a Not-for-Due section.

Also, in the description of the EEPROM library itself, there is no mention
of the Due, that it has no EEPROM, or what alternatives might be useful.

Also, a Warning that writing to flash is not the same, since all the flash
is erased whenever the software is updated.


Is there usable, non-volatile memory in the RTC?
Since the RTC is reset with each power-On or Reset, it is mostly
useless, so if it has real EEPROM, that could be used?