The mushkin press release only talks about the 2TB Reactor. There is no press release about the 4TB model.
The only other independent report I found which doesn't link to the above...
http://www.overclockers.com/ces-2016-mushkin-unveils-reactor-2tb-ssd-teases-4tb-ssd/
The only other independent report I found which doesn't link to the above...
http://www.overclockers.com/ces-2016-mushkin-unveils-reactor-2tb-ssd-teases-4tb-ssd/
Mushkin will release a new REACTOR 2TB SSD in Q2
Mushkin showed us a prototype with two SM2246 controllers in a RAID configuration. Although there are some performance drawbacks, like a drop in IOPS, the capacity makes it appealing for NAS builds, for example. This could also make it’s way to the market in Q2. The MSRPs have yet to be officially determined, but look for aggressive pricing in the $0.25/GB range.