The new Extreme SDHC card from SanDisk comes in 4/8/16/32GB capacities and boasts speeds of up to 30MB/s, which SanDisk claims as the world's fastest.
These cards are designed for HD video and are marketed with the new MacBook Pros in mind, since Apple's new laptops finally (finally!) have SD card slots. 30MB/s is easily fast enough to comfortably boot an OS from the card slot, which we already know is possible. Plus, with all the new DSLRs capable of taking HD video, more space and faster speeds might be of considerable use to photographers and videographers. The cards will be available this August for an undisclosed price. Press release follows. [SanDisk]