A new standard, SD Express, will have a maximum volume of 128 Terabyte and maximum write speed of 985 MB/s. It will support PCI Express interface and NVMe protocol:
https://www.youtube.com/watch?v=k5sBGLpbQsI&feature=youtu.be
https://www.youtube.com/watch?v=k5sBGLpbQsI&feature=youtu.be