Toshiba announced it will produce a new card compliant with SD Memory Standard, Ver. 3.00, UHS104. Curious: the standard is proprietary and not a readily available specification (you have to be a member of the association and/or pay for access).
highlights of the Specification:
Capacity: 32GB - 2TB
Read: 60 MB/s
Write: 35 MB/shttp://www.toshiba.com/taec/news/press_releases/2009/memy_09_572.jsp
Toshiba's "first in the world" entries:
Capacity: 64 GB
Mass Production: Spring 2010
Prototype Release: November 2009
See also http://www.sdcard.org/developers/tech/sdxc
I guess having an SDXC compliant reader connected to a Marvell unit via USB would work. Does anyone know if having the card accessed from the built-in reader on the SheevaPlug offer a read/write speed advantage over a reader connected by USB? I'd guess having a direct line to the processor instead of competing on the USB bus would prove to be an advantage.
As I'm playing around with Gentoo built on a $10.00 4GB, I'm wondering about expanding so I can have a complete system on the card.