The above article mentiones the 750 will be available in 400GB and 1.2TB versions, with an 800GB model 'being considered internally'. Those capacities sound familiar – look at this crop of the specs for the P3500/P3600/P3700 Series:
Note the P3500 has identical capacity grades. As one more point of comparison, look at this leaked screen shot of the UNH-IOL compatibility list:
…so with what appears to be identical firmware revisions, it's a safe bet that the upcoming SSD 750 Series will borrow the same fire-breathing 18-channel controller present in the Intel SSD DC P3700 (reviewed here). The packaging may be more consumer oriented, and the power is likely dialed back a bit as to produce less heat in more airflow constrained consumer PC cases, but it's looking more and more like the SSD 750 will be a reasonably quick consumer / prosumer / workstation SSD. Given that the P3500 launched at $1.50/GB, we hope to see the 750 launch for far less.
My biggest beef with this upcoming consumer NVMe part from Intel is the (possible) lack of an 800GB capacity. Many power users will consider 400GB too small, but would then be forced to jump 3x in capacity (and price) to the 1.2TB model. That might be ok for enterprise budgets, but it won't fly for PC users who can choose from other PCIe SSDs that fill that possible 800-960GB void in Intel's lineup.