Corsair rather silently had added a 4 TB version of Force MP510 NVME SSD, the new SSD series will become available by next week.
Corsair NVMe M.2 SSD "Force MP510" has a large capacity model of 4TB. The NAND flash type is TLC and the controller Phison "PS5012-E12". That should account for transfer speeds in excess of 3,480MB/sec for sequential read and 3,000MB/sec for write, 580,000 IOPS for random read, 680,000 IOPS for write. Operating temperature is 0~65℃, power consumption is 44mW when idle, 7.7W when reading, 6.6W when writing. Endurance is a whopping 6,820TBW, the MTBF is 1.8 million hours, form factor is M.2 2280, weight is 8.2g, and product warranty is 5 years. Sales will start on June 6th, I do not have a price available just yet.
Update: pricing in the EU hover at € 789,- which is roughly 20 cents per GB.