Lexar has announced first 1000x Compact Flash cards for professionals since they allow very high bursting shoot rate and HD video recording.
1000x stands for the speed that will be up to 20 MB per second for writing data into the card, while reading speed will be up to 150 MB/s (!) and thus fully compatible with USB 3 data rate.
The card sizes will be 16GB, 32GB, 64GB and 128GB.