Additionally, the 13.3″ model is available for $999 (reg. $1099). Check it out here at B&H Photo.
SanDisk has announced an Extreme Pro SDXC UHS-I U3 memory card in a massive 512GB capacity. The new card delivers max write speeds up to 90MB/s and transfer speeds up to 95MB/s. The U3 Speed Class 3 rating means that it will deliver a minimum write speed of 30MB/s, which is required for 4K video capture in cameras like the new Panasonic GH4.
The SanDisk Extreme Pro UHS-I U3 SDXC 512GB card retails for $799.95. The Extreme Pro U3 series is also available in 128GB and 256GB capacities, priced at $189.95 and $359.95, respectively. Check them all out here at B&H Photo.
These cards have a max read/write speed of 45MB/s and are UHS-I Class 10 cards for a 10MB/s minimum sustained write speed that will accommodate HD video capture. For more info on SD card specifications and usage type, see my prior post Demystifying SD Cards.