Panasonic revealed a new version of SD cards, the SDHC or the 2nd generation of SD cards. This cards will be incompatible with the present gadgets supporting SD cards but will be used as a standard in HD devices. At present, a 4GB SDHC (model no. RP-SDR04GJ1K) card is available which transfers data at a speed of 5MB/s. It will hit the stores on July 25 for Â¥30,000 ($262).
Press Release [Japanese]