It's debuting at the Toronto Film Festival tomorrow.
Also, there was some controversy back in January when Assange claimed the movie was a hit piece.
From the wikipedia page of the movie:
On January 24, 2013, Julian Assange claimed, during a presentation of the Sam Adams Award for Integrity in Intelligence at Oxford University, that he had read the screenplay of the film, describing it as a[18] "serious propaganda attack on WikiLeaks and the integrity of its staff, as a 'lie built upon a lie'", and as "fanning the flames for war on Iran":[19] the opening scene was inside a putative military complex in Iran and nuclear symbols could be seen (suggesting that the country was building a nuclear weapon, contrary to the findings of US intelligence reports).[20][21][22]
Birgitta Jónsdóttir told the WikiLeaks official Twitter account that "the Iran scene has been written out, plus the name has been changed. Come with constructive ideas how to improve it".[23] Jónsdóttir also tweeted that Assange does not possess the latest version of the script.[24]
Though Assange said that the film is a "hostile work", he also claimed that Cumberbatch is "personally supportive" of the organization.[25] It was reported that the two had a form of communication via email during filming.[26] Cumberbatch stated that, "No matter how you cut it, he's done us a massive service, to wake us up to the zombielike way we absorb our news."[27][28]