you are correct. I am anxious to see this product at NAB. I am going to make an ASSUMPTION here, with my limited knowledge on what this is - what what is appears to be is that Accusys has put four of their C1M Thunderbolt to QSFP adaptors inside the drive chassis, so the user connects their thunderbolt port directly to the C1M board inside this drive box. This will allow for four users ( apparently not expandable for more users, but I could be wrong - I am assuming everything) - to plug in their thunderbolt cables from their Mac's, and have shared storage. The software is probably Tiger Technology Tiger Share, which is a licensed product that must be put on each Mac client.
The standard Accusys Exasan product uses a QSFP switch that connects the drive arrays, and client computers, and uses this C1M box to be a thunderbolt to QSFP adaptor which goes to their switch. So it looks like they built this into the RAID chassis, so you don't see the external boxes, and can plug your Thunderbolt cable directly into the RAID chassis.
I am looking forward to going to their booth to see this product.