SanDisk has taken the unveiled the world's first 1TB SDXC card, doubling the current maximum capacity seen with all other memory cards.The new 1TB SanDisk Extreme Pro SDXC UHS-I memory card only exists as a prototype. However, just two years ago at Photokina 2014 SanDisk announced 512GB capacity card that was later released a few months later, and so...