While so far the Ultra High Speed Class 1 memory card designation has been reserved for SDXC and SDHC cards, Samsung just announced new microSD cards that support the faster interface as well. Currently being produced in 16GB sizes, they have maximum sequential read speeds of up to 80 MB/s, four times that of the high speed cards it introduced last year. There's no word on the write speeds but Samsung is already busy calling its next shot,