Well according to Assange (and choosing Russia Today as a source that's been sympathetic to him), there's more stuff coming from the Snowden channel, even though it's out of Snowden's hands.

http://rt.com/news/assange-snowden-revelations-continue-459/

and also (vie Reuters) http://www.cbc.ca/news/politics/story/2013/07/01/snowden-rus...

So it appears that Greenwald and Snowden are saying two different things.