Replacement for the Fuze?

I also want SDXC card support(without having to format the card as FAT 32) for Sandisk’s next player, and no issues when using cards that are class 10 or faster. I want support for a database of at least 20,000 songs, and for card memory to be integrated with internal memory, or even better, having two card slots(and no internal memory) with the contents of both integrated into a single database.