At least two - Dylan and Zac arriving at boarding school, and Dylan starting self defence lessons. But those are just going to be story progression events - no nudity, kissing, nothing sexual or sensual at all. Important, but not particularly interesting.
It might be poignant to add that it is easily possible to accept that sex scenes are years away, but still enjoy the game. I like that not only Sophia can be slowly corrupted, but also Ellie too. The nightclub event was a real turning point, for both lesbian and straight content. Even on the straight side, you can hook Sophia up with Tyler, and Ellie hooks up with Logan.
Yes, updates take longer than I'd like. There are characters I'd certainly like dropped to speed things up. But then the game wouldn't have the broad appeal it does.
In the meantime though, the corruption is a lot of fun. There's a chance next update Ellie will cheat on her bf. Over the 3 big events we may see up to 4 additional women naked. There is still plenty of hotness happenning until we get to the sex scenes