I received my new gons today, and notice the couplers before I opened the box.
The box still has the note that the Accumate couplers are made under license from Accurail.
The car has 1015-style couplers. I don't know if they're genuine MT 1015s, or Chinese 1015-clones, but they look like the genuine article. Definitely better than the Accumates in my opinion.