The long standing refusal was probably mostly down to the preference of the prosecutor regarding the circumstances of the questioning. In any case, she caved last year and since then its been a diplomatic squabble about why there is no progress, with Sweden giving no official comments (as per usual policy) and Ecuador boasting about how kind and full of compromises they are[1].

I don't expect much will be different now, especially as there is no impending deadline like there was last year.

[1]: http://www.theguardian.com/media/2015/jul/23/julian-assange-...