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Good news for all you memory hogs out there: Toshiba has announced the world’s largest SD memory card, a 64-gigabyte card that employs the new SDXC (XC for extended capacity) memory standard. The bad news? Your existing digital camera or camcorder won’t read the card format out of the box.

More bad news: The high-capacity memory card won’t hit the store shelves until next spring.

Toshiba said the new SDXC format would support memory card capacities of up to a whopping 2 terabytes. Pricing for the 64-gigabyte card will depend on market prices for flash memory in the spring, according to the company.

The company also announced two new SDHC cards with capacities of 16 gigabytes and 32 gigabytes (the SDHC spec tops out at 32 gigs). These cards, which will also be available next spring, can be used in existing cameras and camcorders that support the SDHC format.

Toshiba says all three new cards will bring a maximum write speed of 35 megabytes per second and a read speed of 60 megabytes per second. For videophiles, the new SDXC format will enable video files to extend beyond the current limit of 4 gigabytes.