Yes, with the most updated firmware, efix usb v1.1 and newer version support App Store.

yes! efix usb v1.1 support snow leopard, retail copy only, you must upgrade your efix usb v1.1 firmware to 7.11.17 or newer before proceeding with installation.

EFiX V1, or EFiX USB begin_of_the_skype_highlighting     end_of_the_skype_highlighting V1.01 does not support snow leopard.

EFiX USB begin_of_the_skype_highlighting     end_of_the_skype_highlighting V1.1 has more on-board memory and faster cpu than EFiX USB V1; more tolerant to power surge; efix v1.1 is compatible with snow leopard with firmware update, where efix v1, is not compatible with snow leopard, only compatible windows and leopard.

We do not know ETA on EFiX V2. There will not be any trade-up option for EFiX V2.