Panasonic officially announced the availability of their latest SDXC memory cards. The Japanese manufacturer proposes two models, a 48GB (Class 10), and 64GB (Class10), and claims a transfer rate of 22MB/s.
To give you an idea, with Panasonic camcorder, in HA mode at 17mbps, you should be record up to 6 hours and 20 minutes on the 48GB models, while the 64GB version should allow you to shoot 8.5 hours of video.

Lastly, the format of this new kind of card is exFAT. And for the most sceptic of you, Panasonic reaffirmed the SDXC card can achieve a storage capacity of 2TB, which should be available in the future (but when?)