The official charges will probably be put online as part of court transcripts eventually but I'd expect a journalist (or even Assange's lawyer) will post it sooner.

However it looks like the US indictment[0] is more or less the same as the formal charges will be, considering the exact same maximum sentence as for the indictment was stated at the UK hearing (five years).

[0] https://www.justice.gov/usao-edva/press-release/file/1153481...