Two terabytes of data in your phone? Seriously? That's what the SD Association announced today. The new SDXC card standard supports sizes up to 2TB, with data transfer speeds up to 104 MB/sec and potential future speeds up to 300 MB/sec. The SDXC specification will be released in the first quarter of 2009, the association says, which means that cards may come out by the end of the year. "Big" SDXC cards will fit into digital cameras and music players. But the most amazing part of this news is that SDXC even applies to the sort of "micro" cards that go in cell phones. "The microSDXC card [would be] based on current SD interface for use in mobiles," an association spokeswoman said via e-mail. How do you file away 2 TB of data on a flash card? The SDXC standard will use the Microsoft exFAT file system (aka FAT64), which extends the venerable FAT file system to handle file sizes greater than 4 GB and more than 1000 files per directory.