They've already ordered 30 additional Rafales that we know of, bringing the total eventually up to 53/54. They are looking for more since they love that thing.
EAF has been looking for a heavy/air superiority fighter for over 20 years, hence why they went out and ordered the Su-35. This might be the 3rd or 4th time they either requested it or are close to making a deal.
If it's 24 aircraft as most prelim orders are, then I think they'll split the batch with 12 Strike Es and 12 Cs. The C is a beast in the intercept and one on one role. I think it's also a sure bet that the AIM-120 will be part of this deal.