The indictment leaked 5 months before Assange was kicked out of the embassy, 8 months after it was created.
It was, of course, the case that it was a sealed indictment and wasn't supposed to be released at all prior to the individual charged being arrested, but that is kind of a normal thing in our legal system; many of the charges against the individuals prosecuted as a result of the Mueller investigation came in the form of sealed charges, as another prominent instance of the practice.
> but that is kind of a normal thing in our legal system
Ok, well if it is normal then nobody should have been calling anyone at all a conspiracy theorist for saying that the US was going to have an extradition request the moment he stepped out of the embassy.
We were right. He stepped outside and now there are charges.
The DoJ at the time explicitly denied Assange being under sealed indictment, which, if he was, it should not have.
(In general, the US government is not supposed to explicitly lie to the American people, hence the "I can neither confirm nor deny" line that comes up when an issue is classified; you can't say P, because you can't reveal classified information, but you also can't say not-P because you aren't allowed to lie in an official capacity.)
The claim, all along, was that as soon as he is out of the embassy that the US will bring out their espionage charges.
And he just got out of the embassy,and guess what happened? He recieved espionage charges. Exactly as predicted.