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.

Corsair Force MP510 SSDs
Capacity	240GB	480GB	960GB	1920GB	4TB
Form factor	M2-2280, PCI-E 3x4
Controller	Phison PS5012-E12
NAND	Toshiba BiCS3, 256GB 64-layer 3D TLC				96-layer 3D-TLC
Seq. reading speed	3100MB / s	3480MB / s	3480MB / s	3480MB / s	3480MB / s
Seq. write speed	1050MB / s	2000MB / s	3000MB / s	2700MB / s	3000MB / s
Random read	180,000iops	360,000iops	610,000iops	485,000iops	580,000iops
Random write	240,000iops	440,000iops	570,000iops	530,000iops	680,000iops
Price	€ 55	€ 99	€ 159, -	€ 334	€ 789, -