I hate to call BS, but I've been following Wikileaks closely and haven't seen that tweet.
Frankly, what they've dropped already would have been life-destroying to any other person. They over-estimate the US judicial system and people caring.
However, Wikileaks did release another 8 thousand plus emails from the DNC servers last night. Something was up because it caused hacking and DDOS attempts against them and their twitter was even shadow blocked for a while.