Still no official announcement from the FIVB, but there's a Wikipedia article about it with the pool composition and the schedule. It's in line with what the Russian Volleyball Federation had published earlier about the schedule of the Russian team, so I think it's trustworthy.
As we can see, China is hosting a tournament in 4 out of 5 weeks. It's really unfair if you consider how much travel it's going to be involved for most of the other teams. For example, the South Korean itinerary in the last 3 weeks - Netherlands, Thailand, Argentina - is just brutal.
Also, wasn't every team supposed to host at least one pool? I don't see Belgium among the hosts.
Anyway, 15 games within a month, all over the world. We'll see how it goes.