It can't be coincidence that the most recent dumps of information from Snowden concern Hong Kong specifically. I have to wonder if he is floating information to prove to Hong Kong/Chinese officials that he has more information to broker safety/asylum.
There is some speculation that he was actually turned by the PLA prior to leaking and is providing them an excellent platform to exert pressure on Obama.
Obama did, after all, add the Chinese hacking attempts to the agenda of his summit without consulting them, an extremely rude (to the Chinese) maneuver.
If there is any conspiracy here, it is most likely China making an extremely effective effort to make Obama pay for their loss of face.