Hey there,
As far as I know, EK is not obliged to select a specific number of candidates per batch; they may take all candidates in one group and none in another. All depends on whether they fit the profile they're looking for. As for calling references, mine were called a few hours after the interview, and others were called up to two weeks later. Add the 'Ramadan factor' in, and you shouldn't worry about not receiving any news yet.
Regardless, I wish you all the best. Good Luck!
