There haven't been any...
Oh OK, let's give it a go. I'll work round the families:
Nate and Tori were on-off-on-off-on... I think they are currently "on" but it's rocky because Tori had to fire him to cut costs but chose to fire someone else instead, claiming that it made good financial sense, then the hospital boss found out that she and Nate were dating and got cross, so Nate resigned to save Tori's job.
Justin and Phoebe are engaged but then one of Phoebe's singing mates turned up in the bay and invited Phoebe to go back to the States with her for a week so after forty years of agonising, Phoebe decided she could leave Justin for that long.
Zac and Leah - no idea, don't even care. Leah probably hates him and he probably wants to get back with her because he's masochistic and insane.
Roo came back from wherever she'd been with a toy boy who, tbh, looks the same age as her so, meh.
Morag came back to defend John but did a crap job and John was found guilty and is going to prison for, like, ever, I guess. Marilyn looked horrified and I continued to wonder how she manages to walk on the beach in those shoes she wears.
Baby Luc continues to get passed around like a hot potato - if you're left holding her when the music stops, you have to keep her - and Ash has decided that enough is enough and he is the man to look after her. VJ has discovered that he has no claim on her whatsoever as he is not named on the birth certificate and their marriage wasn't legit as Billie died before signing the paperwork.
Kat is less than thrilled about becoming a surprise baby-mama.
Patrick is turning out to be a surprisingly sexy addition but is suffering from fairly heavy-duty PTSD.
Hunter and Olivia moved into a home of their own, turned out to be crap at it after about five seconds, moved back to Irene's Tardis.
Brody turned into a drug addict after literally one wrap of cocaine and is now a complete junkie.
Mason has had absolutely zero storylines.