[beq]

Will they also have the microSDXC (and I presume miniSDXC) formfactors as part of the SDXC standard? Would the microSDXC formfactor share the same 2TB theoretical max capacity and 104-300 MByte/sec theoretical speed limit as part of the specs?

Furthermore, does the SDXC standard specify a new set of Class-based minimum-sustained-speed ratings (like the Class 2/4/6 ratings for SDHC)? With 104-300 MByte/sec as the maximum speed limit, I hope we will see a lot faster (20MB/sec and up) minimum-speed ratings!

Devices adding SDXC slots will likely use a faster interface bus, which is a good thing at least. There have been too many devices with SD/SDHC slots that are too slow and pose as the bottleneck!

In the meantime, I wonder if most users will choose an SDXC reader that's based on 5Gbps USB 3.0 or (e)SATA (the current 3Gbps or the new 6GBps). It's interesting that all these new SD/USB/SATA developments are making a splash at the same time in CES...